Colorado County Demographics and Population by Age, Sex, and Race, 2021

2021 American Community Survey data for Colorado counties, aggregated by the state's Department of Local Affairs. The dataset includes population counts, racial and ethnic demographics, and detailed age and sex breakdowns. It is hosted on the data.colorado.gov platform via Socrata.

Use Cases

• Analyze racial and ethnic diversity across counties using columns like hispanic, white_nh, black_nh, asian_nh, and other_nh.
• Model age distribution for public service planning using the 15 available age group columns (e.g., ageless5, age5_9, age65_69).
• Calculate sex ratios and population totals for demographic studies using the pop, male, and female columns.
• Create choropleth maps of demographic variables by joining on the geospatial geometry column the_geom with county identifiers geoname and geonum.

Strengths

• Includes 30 columns covering key demographic dimensions: population, race, ethnicity, sex, and detailed age groups.
• Provides direct geospatial geometry (the_geom) for mapping and spatial analysis alongside tabular identifiers (geoname, geonum).
• Data is sourced from the official American Community Survey and processed by a state agency (Department of Local Affairs).

Limitations

• Row count is unknown, which may limit suitability assessment for large-scale modeling.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

U.S. Census Bureau American Community Survey, subset and provided by the Colorado Department of Local Affairs (DOLA).

Collection Method

Survey data aggregation and geographic subsetting.

Time Range

2021

Freshness

Last updated 2026-05-29 11:08:33; freshness should be verified.

Geography

Colorado, United States (county-level).