Sources
Every dataset Birdseye holds, who publishes it, and what is built on it.
Placeholder, not designed. The index pages were deliberately held back from the design pass. This is a plain alphabetical list standing in until they are designed.
Sources that produce metrics#
- American Community Survey (5-Year Estimates)The Census Bureau's continuous household survey, whose five-year estimates are the only official annual source of detailed social, economic and housing statistics for every census tract.census_acs_tract_acs5
- BLS Local Area Unemployment StatisticsOfficial monthly unemployment estimates for US counties, produced by the Bureau of Labor Statistics in cooperation with state workforce agencies.bls_public_api_timeseries
- Census Building Permits SurveyResidential building permits issued by local permit-issuing jurisdictions, the earliest widely available signal of new housing supply.census_bps
- FBI Uniform Crime Reporting Program, Offenses Known to Law Enforcement (Return A)Monthly counts of serious offenses reported to individual law enforcement agencies under the FBI's Uniform Crime Reporting Program.crime_icpsr_return_a_monthly
- Federal School District Data (EDFacts, ED Data Express, and the Common Core of Data)Federal collections of school district assessment results, graduation rates, enrollment and staffing, reported by states to the U.S. Department of Education.nces_eddata_lea_outcomes
- FHFA Annual House Price Index, Census TractsA repeat-sales index of single-family house prices published annually for individual census tracts, which FHFA releases as a developmental series.fhfa_hpi_annual_tract
- HMDA Modified Loan/Application RegisterPublicly released, privacy-modified records of individual mortgage applications and originations reported by covered lending institutions.hmda_mlar
- LEHD Origin-Destination Employment Statistics (LODES), Workplace Area CharacteristicsA count of jobs by the census block where the work is located, built from state unemployment insurance records.census_lehd_lodes_wac
- Quarterly Workforce IndicatorsQuarterly measures of employment, hiring, job gains and losses, and worker turnover, built from state unemployment insurance wage records.census_lehd_qwi
- realtor.com Real Estate Data Library — Core Inventory MetricsA monthly snapshot of homes listed for sale, published by realtor.com for counties, metro areas and ZIP codes from its own active-listing feed.realtor_inventory_core_metrics
- Zillow Home Value IndexA monthly index of typical home value, published by Zillow for metro areas, counties and ZIP codes from a valuation of every home rather than only the ones that sold.zillow_zhvi
- Zillow Mortgage PaymentA monthly estimate of the mortgage payment on the typical home in an area, published by Zillow for metro areas and counties from a modeled combination of home value and prevailing mortgage rates.zillow_payment
- Zillow Observed Rent IndexA monthly index of typical asking rent, published by Zillow for metro areas, counties and ZIP codes from repeat observations of the same rental units rather than a simple average of what happens to be listed.zillow_zori
Reference sources#
Crosswalks, boundary files and population denominators. They support the data without producing a figure of their own.
- 2010 Census Redistricting Data Summary Files (P.L. 94-171)Block-level population and housing counts from the 2010 Census, used to keep tract figures comparable across the 2020 boundary change.census_pl94171_2010
- 2020 Census Block Assignment and Redistricting Files (tract-to-place)Census files that record which places each census block belongs to, used to relate tracts and the cities and towns they sit in.census_tract_place_crosswalk_2020
- American Community Survey 5-Year Estimates, Benchmark GeographiesPublished ACS figures for the nation, metro areas and counties, used as the comparison values a tract is read against.census_acs_bench
- BLS Labor Market Area DirectoryThe official list of labor market areas and the counties that compose them, used to align BLS statistics to geography.bls_lma_directory
- Census 2010-2020 Block Relationship FilesThe Census Bureau's official record of how 2010 census blocks correspond to 2020 census blocks.census_block_rel_2010_2020
- Census Cartographic Boundary FilesThe generalized boundary geometry the Census Bureau publishes for mapping, used to draw the shapes on the map.census_cartographic_boundary_files
- Census Gazetteer Files - PlacesThe Census Bureau's authoritative list of place names, identifiers, land area and representative coordinates.census_gazetteer_places_2025
- Census Geography HierarchyThe official nesting of block groups, tracts, counties and states that gives every small area its place in the national hierarchy.census_geography_hierarchy_2020_pl
- Census Population Estimates, Vintage 2020The final 2010-based population estimates, used to extend population history back before 2020.census_pep_2020
- Census Population Estimates, Vintage 2025Annual population estimates for places, counties and metro areas, used as the denominator behind per-capita rates.census_pep_2025
- Florida Incident-Based Reporting System (FIBRS) Offense DetailMonthly offense counts reported by Florida law enforcement agencies through the state's incident-based reporting system, supplying Florida coverage for the crime metrics.crime_fdle_fibrs
- Law Enforcement Agency Identifiers Crosswalk (LEAIC), 2012A reference file linking law enforcement agency identifiers to census geography, used to place reporting agencies on the map.leaic_crosswalk
- NCES Common Core of Data, 2024-25 Preliminary Directory FilesThe official directory of US public school districts and schools, used to identify and name the districts behind the school metrics.nces_ccd_directory_2024_25
- NCES Common Core of Data, LEA Universe Membership and Staff FilesDistrict-level student membership and staff counts from the Common Core of Data, used as the denominators behind the school staffing measures.nces_ccd_lea_universe
- NCES EDGE School District Geographic Relationship Files, 2025Official relationship files linking school districts to census tracts, places, counties and metro areas, used to place districts on the map.nces_edge_grf_2025
- OMB Metropolitan and Micropolitan Area DelineationsThe official list of which counties belong to which metropolitan or micropolitan statistical area.census_omb_cbsa_delineation_2023