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Census Tract Age Sex Ethnicity Seed
| Input | Module Source | Usage |
|---|---|---|
| Census tract population by age/sex/ethnicity | External (ACS) | Used as seed data in IPF process to generate census tract population by age/sex/ethnicity |
| Census tract population by age/sex | External (ACS) | Age/sex controls used in IPF process to generate census tract population by age/sex/ethnicity |
| Census tract population by ethnicity | External (ACS) | Ethnicity controls used in IPF process to generate census tract population by age/sex/ethnicity |
Initial seed data for the iterative proportional fitting (IPF) process is provided by a combination of eight 5-year ACS tables. These are not used directly for census tract population by age/sex/ethnicity as each race category includes both Hispanic and Non-Hispanic unless otherwise noted. Additionally, age categories for the ethnicity tables are reported at too aggregate a level for direct use in SANDAG's Estimates Program, so the B01001 table is used to naively split aggregate categories into more granular groups. These shortcomings make the data unfit for direct use but adequate enough to serve as initial seed data in an IPF process.
- B01001 | SEX BY AGE
- B01001B | SEX BY AGE (BLACK OR AFRICAN AMERICAN ALONE)
- B01001C | SEX BY AGE (AMERICAN INDIAN AND ALASKA NATIVE ALONE)
- B01001D | SEX BY AGE (ASIAN ALONE)
- B01001E | SEX BY AGE (NATIVE HAWAIIAN AND OTHER PACIFIC ISLANDER ALONE)
- B01001G | SEX BY AGE (TWO OR MORE RACES)
- B01001H | SEX BY AGE (WHITE ALONE, NOT HISPANIC OR LATINO)
- B01001I | SEX BY AGE (HISPANIC OR LATINO)
The B01001 | SEX BY AGE 5-year ACS table provides census tract population by age and sex.
The B03002 | SEX BY AGE 5-year ACS table provides census tract population by ethnicity. This table includes Hispanic/Non-Hispanic designations within each race.
This process has no direct outputs. Census tract seed data by age/sex/ethnicity is generated using an iterative proportional fitting process and fed directly to the next step in the process of generating population by age/sex/ethnicity by housing type in each MGRA.