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      Age Data

      A summary of the Census Age Data specification.

      1.0 Introduction

      Age datasets are reported once per year by the United States Census. The data sets range from 2015 - to 2020 and have been aggregated to census tracts.

      The Census Bureau collects information about age in two questions- what is your age, and what is your birthdate. The age categories used to summarize the data are as follows:

      Age Categories

      • Total Population

      • Under 5 years

      • 5 - 9 years

      • 10 - 14 years

      • 15- 19 years

      • 20 - 24 years

      • 25 - 29 years

      • 30 - 34 years

      • 35 - 39 years

      • 40 - 44 years

      • 45 - 49 years

      • 50 - 54 years

      • 55 - 59 years

      • 60 - 64 years

      • 65 - 69 years

      • 70 - 74 years

      • 75 - 79 years

      • 80 - 84 years

      • 85 years and over

      Census Age Parameters: Census.gov

      2.0 Data Specification

      The following table is the format in which downloaded Age data will be provided:

      Field

      Type

      Description

      geo_id

      String

      14-digit code relating the data to the correct geolocation.

      census_tract_code

      String

      The unique identifier provided by the US Census for each census tract.

      sub_category

      String

      Age bracket.

      unit

      String

      Total count of persons.

      value

      Float

      Number of persons fitting within survey criteria.

      year

      String

      Year data was collected.

      county_name

      String

      Name of the county that the census tract resides in.

      state_name

      String

      Name of the state that the census tract resides in.

      geometry

      String

      The GIS information required for the computer to read the mapping file.

      💡Tip: The “GEO.ID” field contains 14-digit codes that identify the summary level of data, the geographic component of the data, and FIPS codes that uniquely identify the data. For example, the 14-digit “GEO.ID” for Harris County, TX is “0500000US48201” where “050” represents the summary level of the data, “0000” represents the 2-digit geographic variant, and the 2-digit geographic component, “US” represents the United States, “48” represents the state of Texas and “201” represents Harris County.