40
State FIPS Code
Oklahoma
OK · 77 counties
FIPS code 40 is Oklahoma (OK). Oklahoma has a population of 3,970,497 (2022 ACS estimate) and 77 counties. The 2-digit state FIPS code 40 is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets as the standard identifier for Oklahoma.
FIPS Code
40
Abbreviation
OK
Population
3,970,497
2022 ACS est.
Federal Datasets Using Code 40
State FIPS code 40 appears as the state identifier in the following federal datasets. Any dataset that reports data at the state level uses this code to identify Oklahoma.
Census Bureau ACS
American Community Survey — population, demographics, housing for OK
BLS Quarterly Census
Bureau of Labor Statistics QCEW employment and wages by state
BLS OEWS
Occupational Employment and Wage Statistics — state-level salary data
EPA Environmental Data
EPA air quality, water, and environmental monitoring data
HUD Housing Data
HUD fair market rents and housing assistance data
USDA ERS
Economic Research Service county and state agricultural data
BEA GDP Data
Bureau of Economic Analysis — GDP and income by state
CDC Health Data
Centers for Disease Control county-level health statistics