FIPS code 04001 is Apache County, Arizona. With a population of 66,054 (2022 ACS estimate), it ranks #10 in Arizona and #815 nationally. The state FIPS code for Arizona is 04. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
04001
Population
66,054
2022 ACS · #815 nationally
Density
5.9/mi²
people per sq mile
Land Area
11,198
sq miles
Urban/Rural
Nonmetro — rural, adjacent to metro
RUCC 8
How This FIPS Code Works
The 5-digit FIPS code 04001 is formed by combining the 2-digit state identifier 04 (Arizona) with the 3-digit county identifier 001. Together they uniquely identify Apache County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 04001
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 04001.
Median Household Income
$37,483
ACS B19013_001E
Poverty Rate
32.5%
ACS B17001 (below poverty level)
Median Age
35.6
ACS B01002_001E
Adjacent Counties (9)
Counties that share a border with Apache County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 04001.
Federal Datasets Using Code 04001
FIPS code 04001 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 04001 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:04",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Apache County, Arizona, income, pop, ...]
-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '04001';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '04'
AND county_fips = '001';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 4001 is WRONG for this county
library(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "04",
county = "001",
year = 2022
)
ZIP Codes in Apache 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 Apache County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 86538 | 100.0% |
| 86556 | 100.0% |
| 85920 | 100.0% |
| 85924 | 100.0% |
| 85925 | 100.0% |
| 85927 | 100.0% |
| 86508 | 100.0% |
| 86511 | 100.0% |
| 86512 | 100.0% |
| 86544 | 100.0% |
| 86535 | 100.0% |
| 86540 | 100.0% |
| 85932 | 100.0% |
| 85936 | 100.0% |
| 85938 | 100.0% |
| 85940 | 100.0% |
| 86028 | 100.0% |
| 86547 | 100.0% |
| 86545 | 100.0% |
| 86502 | 100.0% |
| 86506 | 100.0% |
| 86507 | 100.0% |
| 86504 | 98.7% |
| 86503 | 95.3% |
| 85930 | 88.6% |
| 86505 | 84.2% |
| 86514 | 83.9% |
| 86520 | 78.0% |
| 87328 | 38.8% |
| 84531 | 21.3% |
Showing top 30 of 34 ZIP codes by residential address share.