Adams County
Mississippi · County seat: Natchez · Active county or equivalent
FIPS code 28001 is Adams County, Mississippi. With a population of 29,425 (2022 ACS estimate), it ranks #27 in Mississippi and #1477 nationally. Adams County is part of the Natchez, MS-LA. The state FIPS code for Mississippi is 28. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
28001
Population
29,425
2022 ACS · #1477 nationally
Density
63.6/mi²
people per sq mile
Land Area
462
sq miles
Urban/Rural
Nonmetro — urban 2.5K–19.9K, not adjacent to metro
RUCC 7
How This FIPS Code Works
The 5-digit FIPS code 28001 is formed by combining the 2-digit state identifier 28 (Mississippi) with the 3-digit county identifier 001. Together they uniquely identify Adams County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 28001
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 28001.
Median Household Income
$37,271
ACS B19013_001E
Poverty Rate
27.2%
ACS B17001 (below poverty level)
Median Age
41.5
ACS B01002_001E
Metropolitan Area
Adjacent Counties (5)
Counties that share a border with Adams County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 28001.
Federal Datasets Using Code 28001
FIPS code 28001 appears as the county identifier in the following federal datasets. Analysts joining data across these sources use this code as the common geographic key.
Using FIPS Code 28001 in Code
Common patterns for querying federal datasets by this county's FIPS code. The leading zeros are significant — always treat FIPS codes as strings, not integers.
import requests
url = "https://api.census.gov/data/2022/acs/acs5"
params = {
"get": "NAME,B19013_001E,B01003_001E",
"for": "county:001",
"in": "state:28",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Adams County, Mississippi, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '28001';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '28'
AND county_fips = '001';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 28001 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "28",
county = "001",
year = 2022
)ZIP Codes in Adams County
ZIP codes do not align perfectly with county boundaries — a single ZIP code can span multiple counties, and a county can contain parts of many ZIP codes. The ratios below (from the Census 2020 ZCTA relationship file) show the land area share of each ZCTA that falls within Adams County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 39120 | 87.0% |
| 39661 | 16.6% |