Coronavirus Disease 2019 (COVID-19) in Colorado: State & National Resources

Census 2020 Maps and Data Tools

This page features a variety of data tools developed by the State Demography Office and the Census Bureau to assist with Census completion planning, track Census response rates, and understanding the characteristics of the hard to count population.

State Demography Office Tools to identify Census Response Rates, Contact Areas, Hard to Count Communities, and Census Grant Expenditures

This response rate map shows the latest response rate data and the composition of tracts by race and ethnicity and age. This information is useful for viewing specific communities.

Access the Colorado Census Response Rate Map here.

This map, developed by the State Demography Office, idenifies the response types for Census tracts throughout the state. The map identifes areas where households will receive a Census invitation letter, a Census initation packet containing a paper Census form, or will be have a Census packet delivered by a Census enumerator. All housholds will be able to respond to the Census online, via telephone, or by using a paper form.

Access the Colorado Census Contact Type Map here.

The Colorado Counties and Census Tracts Identifier Map is a tool produced by the State Demography Office to identify population characterists of Colorado counties and census tracts. Information from this map can help idenrify hard to count populations.

Access the Colorado Counties and Census Tracts Identifier Map here.

This map displays the Census Local Complete Count Committees, the grants issued by the DOLA Census Outreach Grant Program, and the reimbursements issued by the Colorado Census Support Program.

Access the Colorado Census Support Map here.

Census Bureau Tools to identify Census Contact Areas, Response Rates, Hard to Count Communities and the Census Planning Database

This visualization tool, maintained by the City University of New York, supplements the information provided by the ROAM tool by providing information on internet connectivity.

Access the HTC 2020 Tool here.

The Census Response Rate Map is a tool developed by the U.S. Census Bureau to help improve Ceensus Self-Response.

Beginning on March 20, the 2020 Census Response Rate Map will be available on This map will provide near real-time data on Census responses to help communities track their self-response rates. When partners/Complete Count Committees find self-response is lagging on the map, they can plan events to encourage self-response in those areas. The Response Rate Map will be updated between 3 pm and 4 pm (EST) daily to reflect response rates from the prior day. Response rates will be updated daily, 7 days per week, until the end of May 2020. From then until the end of July 2020, the map will be updated Monday – Friday only. U sers will be able to view the map and filter to view response rates. Access the Census Response Rate Map tool at

The Census Response Outreach Area Mapper (ROAM) is a tool developed by the U.S. Census Bureau to identify hard-to-survey areas. After the beginning of Census Data collection, use this tool to track Census form submissions and response rates.

The Census Type of Enumeration Area Viewer (TEA) shows census tracts that will receive census forms through the "Update/Leave" and "Update/Enumerate" programs. These programs are designed to serve rural areas with homes that do not have standard street addresses. The census bureau estimates that five percent of homes nationwide will be enumerated using these programs.

  • Homes that are part of the "Update/Leave" program will be visited by a census enumerator, who will leave a census form behind for the household to complete.
  • Homes that are part of the "Update/Enumerate" program will be visited by an enumerator, who will complete the census form during their visit with a household. The "Update/Enumerate" program is focused on remote areas in Alaska and Northern Maine.

Access the Type of Enumeration Area Viewer here.

The Census Mail Contact Strategies Viewer shows how the country will be asked to respond to the 2020 Census. Nearly every household will be invited to respond online, by phone or by mail to the census starting in mid-March 2020. Most areas, about three of every four households, will receive an invitation to respond online (or by phone), while the other households will receive a paper questionnaire along with an invitation to respond online. Regardless of which invitation they receive, all households that have not yet responded will receive a paper questionnaire by mid-April. This map also shows which households will receive English/Spanish bilingual invitations and questionnaires.

The interactive map illustrates the contact strategy to inform the public and partners of the Census Bureau’s plan to count everyone by geographic location for the 2020 Census. A decade of research and testing has determined the best way to invite everyone to respond to the 2020 Census. Most households will first receive a letter asking them to complete the census questionnaire online with information about how to respond online or by phone in English plus 12 non-English languages. Areas less likely to respond online, approximately 21.8% of households, will receive a paper questionnaire along with the invitation to respond online or over the phone. Areas assigned to receive a paper questionnaire first have a low self-response rate to the Census Bureau’s ongoing American Community Survey (ACS), and have either low internet response rates, high population over age 65, or low rate of internet subscriptions.

Access the Census Mail Contact Strategies Viewer here.

The Census Planning Database (PDB) assembles a range of housing, demographic, socioeconomic, and census operational data that can be used for survey and census planning. Data are provided at both the census block group and tract levels of geography. It includes the Census Low Response Score (LRS) used to identify tracts with a high percentage of "hard to count" populations.

Access the Census Planning Database here.

This paper describes how the Low Response Score (LRS) is calculated and identifies population characteristics associated with high LRS percentages.

The Low Response Score (LRS): A Metric to Locate, Predict, and Manage Hard-to-Survey Populations (2016)