Miller County
Arkansas · County seat: Texarkana · Active county or equivalent
FIPS code 05091 is Miller County, Arkansas. With a population of 42,682 (2022 ACS estimate), it ranks #16 in Arkansas and #1137 nationally. Miller County is part of the Texarkana, TX-AR. The state FIPS code for Arkansas is 05. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
05091
Population
42,682
2022 ACS · #1137 nationally
Density
68.2/mi²
people per sq mile
Land Area
626
sq miles
Urban/Rural
Metro — under 250K population
RUCC 3
How This FIPS Code Works
The 5-digit FIPS code 05091 is formed by combining the 2-digit state identifier 05 (Arkansas) with the 3-digit county identifier 091. Together they uniquely identify Miller County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 05091
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 05091.
Median Household Income
$47,613
ACS B19013_001E
Poverty Rate
20.5%
ACS B17001 (below poverty level)
Median Age
39.9
ACS B01002_001E
Metropolitan Area
Adjacent Counties (7)
Counties that share a border with Miller County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 05091.
Federal Datasets Using Code 05091
FIPS code 05091 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 05091 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:091",
"in": "state:05",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Miller County, Arkansas, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '05091';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '05'
AND county_fips = '091';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 5091 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "05",
county = "091",
year = 2022
)ZIP Codes in Miller 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 Miller County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 71834 | 100.0% |
| 71837 | 100.0% |
| 71839 | 100.0% |
| 71854 | 100.0% |
| 71838 | 5.4% |
| 75556 | 0.9% |