The GeoTIFF raster grids in this repository represent the CA-POP databased, which consists of statewide population layers of California. These layers were constructed using dasymetric mapping techniques to produce 100m x 100m estimates for 9 variables from the 2020 United States Census (P.L. 94-171 Resdistricting Summary File), using census block estimates as the population 'source zones', as described in Depsky et al. 2022 (https://doi.org/10.1371/journal.pone.0270746).
UPDATE (10/24/2022): Two additional grids were produced and made available to better represent the populations of California residents that identify as American Indian and Alaska Native alone (n= ~630,000) (AMIND_ALONE) and as American Indian and Alaska Native alone or in any combination of other races (n= ~1.4 million) (AMIND_COMBO), for both Hispanic and Non-Hispanic ethnicities. Our previous estimates, as detailed in the published article, only represented Non-Hispanic residents that identified as American Indian and Alaska Native alone (n= ~156,000). This update now provides flexibility for users to represent the American Indian and Aalaska Native population in one of three ways across the state. However, it should be noted that new AMIND_ALONE grid contains overlapping population with with the total Hispanic (HISP) grid and the new AMIND_COMBO grid overlaps with both the HISP and the Not-Hispanic other/multi (NHOTHERMULTI) grids. AMIND_ALONE is fully contained within AMIND_COMBO.
| 2020 Census Block Level Population Totals Obtained (P.L. 94-171 Code) | CA-POP Grid Name |
|---|---|
| Grids created for each variable | |
| Population (P002001) | TOTAL |
| Hispanic or Latino (P002002) | HISP |
| Not-Hispanic or Latino, White alone (P002005) | NHWHITE |
| Not-Hispanic or Latino, Black or African American alone (P002006) | NHBLACK |
| Not-Hispanic or Latino, American Indian and Alaska Native alone (P002007) | NHAMIND |
| American Indian and Alaska Native alone (Hispanic/Latino and Not-Hispanic/Latino) (P001005) | AMIND_ALONE |
| American Indian and Alaska Native alone or in any combination of multiple races (Hispanic/Latino and Not-Hispanic/Latino)* | AMIND_COMBO |
| Not-Hispanic or Latino, American Indian and Alaska Native alone (P002007) | NHAMIND |
| Not-Hispanic or Latino, Asian alone (P002008) | NHASIAN |
| Not-Hispanic or Latino, Native Hawaiian and Other Pacific Islander alone (P002009) | NHHIPI |
| -- | -- |
| OTHER/MULTI grid created from sum of: | NHOTHERMULTI |
| Not-Hispanic or Latino, Some Other Race alone (P002010) | -- |
| Not-Hispanic or Latino, Population of two or more races (P002011) | -- |
| -- | -- |
| MINORS grid (population < 18 years old) created from: | MINORS |
| Population of adults (P003001) (subtracted from P002001) | -- |
*AMIND_COMBO is the sum of P001_ 005,012,016,020,021,022,027,031,032,033,037,038,039,043,044,045,048,049,050,054,055,056,058,059,060,062,064,065,066,068,069,071