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by Weinberger, Penelope

Dear CTPP Users, https://www.surveymonkey.com/r/CTPPGUI<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.surveymonkey.com_r…> In our ongoing quest for improvement we are asking you to click the link above today to participate in a survey about the CTPP data user interface. This survey is for any and all consumers of CTPP data whether you bulk download, use the current GUI, or have the results delivered to you. The survey is anonymous, though there is an option for your email, if you would like to help further. It should take about 15 minutes (lengthy, I know, but important) Please forward this invitation to anyone in your organization who you fell is the correct recipient. The survey closes May 23, 2021. Penelope Weinberger CTPP Program Manager AASHTO Ctpp.transportation.org

5 years

Urban Areas for the 2020 Census

by Weinberger, Penelope

In case you missed it, The March 20th Census Bureau/FHWA webinar with presentations and Q and A are all now available at: https://ctpp.transportation.org/urban-areas-for-the-2020-census/ Check it out just for the Q and A! Remember comments are due on FR notice by May 20, 2021. Penelope Weinberger CTPP Program Manager AASHTO Ctpp.transportation.org

5 years

FW: Don't Forget to Register! Census Releases 2020 Apportionment Counts: How Will This Affect Your Constituency?

by Weinberger, Penelope

Register today! From: Association of Public Data Users <info(a)apdu.org> Sent: Saturday, May 1, 2021 10:00 AM To: Weinberger, Penelope <pweinberger(a)aashto.org> Subject: Don't Forget to Register! Census Releases 2020 Apportionment Counts: How Will This Affect Your Constituency? [https://staticapp.icpsc.com/icp/resources/mogile/364653/31996ffd8c767ce0c32…] [https://staticapp.icpsc.com/icp/resources/mogile/364653/39ca9180299cb2cfd20…]<https://click.icptrack.com/icp/relay.php?r=73030998&msgid=1148861&act=L5RP&…> Census Releases 2020 Apportionment Counts: How Will This Affect Your Constituency? LAST CHANCE TO REGISTER Monday, May 3, 2021 2:00 PM - 3:00 PM ET Register for free<https://click.icptrack.com/icp/relay.php?r=73030998&msgid=1148861&act=L5RP&…> Tune in to learn what to make of the 2020 Census Apportionment Counts. They are due for release on April 30, and everyone has questions. This once-a -decade event realigns political representation. It’s the Census Bureau’s most anticipated data release. Learn how these counts differ from the final 2020 state population totals expected later this year. Also, what impact will the Apportionment Counts have on your grantees, funding partners, stakeholders, and priorities? Join us for an unvarnished perspective from a former Census Bureau outreach leader. Brought to you by The Census Project. Presenter: Steve Jost, Senior VP Content Strategy, Subject Matter Unsubscribe <https://app.icontact.com/icp/mmail-mprofile.php?r=73030998&l=138968&s=L5RP&…> This message was sent to pweinberger(a)aashto.org<mailto:pweinberger@aashto.org> from info(a)apdu.org<mailto:info@apdu.org> Association of Public Data Users CREC P.O. Box 12546 Arlington, VA 22209 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - [iContact - Try it for FREE]<https://www.icontact.com/signup-trial?utm_medium=poweredby&utm_source=foote…>

5 years

Read the last two sections of this... New Disclosure Avoidance System Update

by Graham, Todd

Hi CTPP & censusy friends- Many of you get USCB's GovDelivery newsletters. You'll already have this, below, in your emailbox. https://content.govdelivery.com/accounts/USCENSUS/bulletins/2d54901 FYI - just FYI - be sure to READ THE LAST THREE SECTIONS of the newsletter. Those last 3 sections are: * The announcement of a Friday, Apr 30 webinar about DP/DAS. * The discussion of "How to submit feedback" -- and specific questions USCB is asking. * And a timeline of what's happening now thru September: Census execs will make a number of Redistricting Data File final decisions ~ 2 months ahead of the Redistricting File release date. Enjoy. [Metropolitan Council Logo] Todd Graham Principal Forecaster | Research Metropolitan Council 390 North Roberrt Street, St. Paul, MN 55101 Ph. 651-602-1322 metrocouncil.org<https://www.metrocouncil.org/data> | facebook<https://www.facebook.com/MetropolitanCouncil> | twitter<https://twitter.com/metcouncilnews> From: U.S. Census Bureau <census(a)subscriptions.census.gov> Sent: Wednesday, April 28, 2021 1:09 PM To: Graham, Todd <todd.graham(a)metc.state.mn.us> Subject: Now Online: New Disclosure Avoidance System Update Meets or Exceeds Redistricting Accuracy Targets Now Online: New Disclosure Avoidance System Update Meets or Exceeds Redistricting Accuracy Targets [Registered United States Census Bureau Logo]<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> [Privacy lock]<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> Now Online: New Disclosure Avoidance System Update Meets or Exceeds Redistricting Accuracy Targets ________________________________ The U.S. Census Bureau's most recent updates to the new Disclosure Avoidance System (DAS) fully satisfy the specialized accuracy criteria<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> established for the 2020 Census P.L. 94-171 redistricting data, based on an analysis of the latest set of demonstration data<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> released today. As described in our April 19 newsletter<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…>, this is the fifth such demonstration data set, but the first that reflects a change in the privacy-loss budget (PLB). The new data utilize a PLB of 10.3 for persons and 1.9 for housing units, totaling a global PLB of 12.2 that more closely approximates the anticipated final PLB to ensure the redistricting use case targets are met. Previous releases used a constant PLB of 4.0 for persons and 0.5 for housing units (a global PLB of 4.5), which allowed us to compare the effects of incremental algorithmic improvements in the system. Those versions were purposefully "tuned" to privacy and not "tuned" for producing highly accurate redistricting data. Tuning to Redistricting Accuracy Targets As we discussed in our April 7 newsletter<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…>, the April 2021 Privacy-Protected Microdata Files (PPMFs) was specifically tuned to meet stringent fitness-for-use accuracy targets for the redistricting and Voting Rights Act use cases. This tuning was designed to ensure that the largest racial /ethnic group in "off-spine" geographies (e.g., places or voting districts) with populations of at least 500 people, as a proportion of the total population, was within +/- 5% of the enumerated value at least 95% of the time. The April 2021 PPMFs exceeded this accuracy target. For places and other off-spine entities with populations between 500-549 people, 99.52% of these geographies meet this target; those with larger populations perform even better. The April 2021 PPMFs incorporated a number of additional improvements that provide better accuracy for many other important statistics. Some highlights of these improvements include: ________________________________ County Total Population: All Counties Mean Absolute Percent Error across all counties is 0.04% (4.91 people) for the April 2021 PPMF. This is down from 0.12% (November 2020), 0.09% (September 2020), 0.14% (May 2020), and 0.78% (October 2019). [CountyMAPE] ________________________________ County Total Population: Smallest Counties (Populations Under 1,000) Mean Absolute Percent Error for the smallest counties (with populations < 1000) is 0.72% (3.74 people). This is down from 6.38% (November 2020), 3.37% (September 2020), 2.72% (May 2020), and 28.49% (October 2019). [SmallestCounties] ________________________________ Total Population: All Incorporated Places Mean Absolute Percent Error across all incorporated places is 1.24% (21 people) for the April 2021 PPMF. This is down from 4.98% (November 2020), 4.24% (September 2020), 8.79% (May 2020), and 10.20% (October 2019). [AllIncorpPlaces] ________________________________ Total Population: Smallest Incorporated Places (Populations Under 500) Mean Absolute Percent Error for the smallest incorporated places (with populations < 500) is 2.83% (3.6 people) for the April 2021 PPMF. This is down from 12.80% (November 2020), 10.68% (September 2020), 16.62% (May 2020), and 19.03% (October 2019). [SmallestIncorpPlaces] ________________________________ Total Population: Rural Blocks Mean Absolute Error for rural block-level population counts is 0.91 people for rural blocks in the April 2021 PPMF. This is down from 2.16 people (November 2020), 1.88 people (September 2020), 3.65 people (May 2020), and 3.83 people (October 2019). [RuralBlocks] ________________________________ Total Population: Urban Blocks Mean Absolute Error for urban block-level population counts is 2.52 people in the April 2021 PPMF. This is down from 3.93 people (November 2020), 3.78 people (September 2020), 7.70 people (May 2020), and 9.21 people (October 2019). [UrbanBlocks] ________________________________ Tract Occupancy Rate: All Tracts Mean Absolute Error in occupancy rates for census tracts is 0.75 percentage points in the April 2021 PPMF. This is down from 1.81 percentage points (November 2020), 1.85 percentage points (September 2020), 1.80 percentage points (May 2020), and 7.23 percentage points (October 2019). [TractOccupancy] ________________________________ Upcoming Webinar for More Information To assist with understanding and analyzing the new demonstration data, we will be hosting a webinar on Friday, April 30 at 1:00 p.m. EDT. The webinar will cover in more detail the updates reflected in these files, a walk through of the associated metrics, and an opportunity to ask questions. The webinar is open to the public and a recording will be posted on the website soon after. Dial-in: Event: Understanding the April 2021 Demonstration Data WebEx Event address for attendees: https://uscensus.webex.com/uscensus/onstage/g.php?MTID=e6f1f895d92d067dbaa0…<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> WebEx Event number (if needed): 199 529 2379 WebEx Event password (if needed): @Census1 Date and time: Friday, April 30, 2021 1:00 pm EDT Duration: 1 hour For Telephone audio option please call 1-800-369-2064 OR 1-212-287-1671 Passcode: 4867486 For 1-way listen only computer audio, please click Audio Broadcast button in WebEx. If it does not connect, please use the telephone audio option. ________________________________ How to Submit Feedback The changes in the April 2021 PPMFs<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> data set reflect the cumulative feedback received from the data user community throughout the development process. We look forward to feedback from data users on this new demonstration product<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…>. Your input will inform the Census Bureau's June 2021 final decision on the PLB and on the 2020 Census redistricting data parameters. The deadline to submit feedback is May 28, 2021. ** Please send comments to 2020DAS(a)census.gov<mailto:2020DAS@census.gov> with the subject line "April 2021 Demonstration Data." Particularly useful feedback would describe: * Fitness-for-use: Based on your analysis, would the data needed for your applications (redistricting, Voting Rights Act analysis, estimates, projections, funding data sets, etc.) be satisfactory? * How did you come to that conclusion? * If your analysis found the data to be unsatisfactory, how incrementally would accuracy need to change to improve the use of the data for your required or programmatic use case(s)? * Have you identified any improbable results in the data that would be helpful for us to understand?" * Privacy: Do the proposed products present any confidentiality concerns that we should address in the DAS? * Improvements: Are there improvements you've identified that you want to make sure we retain in the final design? Be specific about the geography and error metric for the proposed improvement. ________________________________ 2021 Key Dates, Redistricting (P.L. 94-171) Data Product: TODAY, April 28 * Census Bureau releases new Privacy-Protected Microdata Files (PPMFs) and Detailed Summary Metrics:<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> * One set with a global privacy-loss budget ("epsilon") of 12.2 (10.3 for persons and 1.9 for housing units), approximating the anticipated final PLB level. * A second set with the global-privacy loss budget ("epsilon") of 4.5 (4.0 for persons and 0.5 for housing units), as used for prior demonstration data. May: * In addition to releasing these new demonstration data for public analysis and evaluation, the Census Bureau also anticipates publishing additional empirical evaluations of the fitness-for-use of these data for redistricting and Voting Rights Act purposes in May. By May 28: * Data users submit feedback. Early June: * The Census Bureau's Data Stewardship Executive Policy (DSEP) Committee makes final determination of the PLB, system parameters based on data user feedback for the 2020 Census P.L. 94-171 data. Late June: * Final DAS production run and quality control analysis begins for P.L. 94-171 data. By August 16: * Release 2020 Census P.L. 94-171 data as Legacy Format Summary File. Released via Census Bureau FTP site. September: * Census Bureau releases PPMFs and Detailed Summary Metrics from applying the production version of the DAS to the 2010 Census data. * Census Bureau releases production code base for P.L. 94-171 redistricting summary data file and related technical papers. By September 30: * Release 2020 Census P.L. 94-171 data (released via data.census.gov) and Differential Privacy Handbook. Was this forwarded to you? Sign up to receive your own copy! Sign Up!<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> ________________________________ Useful Links: * IPUMS NHGIS Privacy-Protected Census Demonstration Data<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> * DAS Updates<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> * Progress Metrics and Data Runs<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> * Newsletter Archives<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> * All DAS FAQs<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> ________________________________ Have Suggestions? Do you have specific questions you'd like us to answer in this newsletter or topics you'd like discussed? Send us an email at 2020DAS(a)census.gov <mailto:2020DAS@census.gov> and let us know! Contact Us<mailto:2020DAS@census.gov> About Disclosure Avoidance Modernization The Census Bureau is protecting 2020 Census data products with a powerful new cryptography-based disclosure avoidance system known as "differential privacy." We are committed to producing 2020 Census data products that are of the same high quality you've come to expect while protecting respondent confidentiality from emerging privacy threats in today's digital world. Share This<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> Stay connected with us! Join the conversation on social media. [facebook]<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…>[twitter]<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…>[linkedin]<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…>[youtube]<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…>[instagram]<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…> ________________________________ This is an official email from the U.S. Census Bureau. If you have any questions or comments, please contact us (http://www.census.gov/about/contact-us.html<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flnks.gd%2…>).

5 years

Tell us what you think and get paid to do it!

by Weinberger, Penelope

Good Morning, The CTPP announces an RFP for consultant services to assess the use and gaps in CTPP tables: The RFP is attached and can also be found at: https://ctpp.transportation.org/whats-new/ This RFP closes on May 6th. Please feel free to share. Penelope Weinberger CTPP Program Manager AASHTO Ctpp.transportation.org

5 years, 1 month

Polygon Upload

by Weinberger, Penelope

Hey all, Has anyone used the polygon uploader in the CTPP software? Penelope Weinberger Transportation Data Program Manager AASHTO https://data.transportation.org

5 years, 1 month

listserv migration

by Weinberger, Penelope

Hello CTPP list members, We are looking into moving the CTPP list, and I am wondering if it has all the functionality it needs, some things to consider are attachments and attachment size, archives, digest or each email (if we have to choose one or the other), things I have not thought of... Please weigh in. Penelope Weinberger Transportation Data Program Manager AASHTO https://data.transportation.org

5 years, 1 month

Commuting by Public Transport in the United States: 2019

by Charles Purvis

The Census Bureau today released ACS Report #48 “Commuting by Public Transportation in the United States: 2019” https://www.census.gov/library/publications/2021/acs/acs-48.html <https://www.census.gov/library/publications/2021/acs/acs-48.html> Congratulations to the Census Bureau Journey-to-Work Branch! Job well done!

5 years, 1 month

Working from Home During the Pandemic

by Charles Purvis

The Census Bureau just released a news story: “Working from Home During the Pandemic: Those Who Switched to Telework have High Income, Education, and Better Health” The data is from the Census Bureau’s experimental “Household Pulse Survey”. https://www.census.gov/library/stories/2021/03/working-from-home-during-the… <https://www.census.gov/library/stories/2021/03/working-from-home-during-the…> Home for the “America Counts” story series: https://www.census.gov/library/stories.html <https://www.census.gov/library/stories.html> Any transportation researchers looking into the Household Pulse Survey?

5 years, 1 month

Preliminary Program for 2021 ACS Conference

by Ed Christopher

This conference may be of interest to some on this list. https://acsdatacommunity.prb.org/p/conferences [Population Reference Bureau] Update from American Community Survey Data Users Group <https://acsdatacommunity.prb.org/> Dear Colleague, The Preliminary Program <https://acsdatacommunity.prb.org/p/conferences> for the 2021 American Community Survey (ACS) Data Users Conference is now available! The ACS Conference will be held virtually from 11:00 a.m. to 5:00 p.m. EDT on May 18-20. We are currently finalizing the ACS Conference website and will open registration soon.

5 years, 1 month

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