Coconino County
Arizona · County seat: Flagstaff · Active county or equivalent
FIPS code 04005 is Coconino County, Arizona. With a population of 144,705 (2022 ACS estimate), it ranks #7 in Arizona and #454 nationally. Coconino County is part of the Flagstaff, AZ. 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
04005
Population
144,705
2022 ACS · #454 nationally
Density
7.8/mi²
people per sq mile
Land Area
18,619
sq miles
Urban/Rural
Metro — under 250K population
RUCC 3
How This FIPS Code Works
The 5-digit FIPS code 04005 is formed by combining the 2-digit state identifier 04 (Arizona) with the 3-digit county identifier 005. Together they uniquely identify Coconino County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 04005
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 04005.
Median Household Income
$67,266
ACS B19013_001E
Poverty Rate
16.9%
ACS B17001 (below poverty level)
Median Age
31.7
ACS B01002_001E
Metropolitan Area
Adjacent Counties (6)
Counties that share a border with Coconino County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 04005.
Federal Datasets Using Code 04005
FIPS code 04005 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 04005 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:005",
"in": "state:04",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Coconino County, Arizona, income, pop, ...]
-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '04005';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '04'
AND county_fips = '005';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 4005 is WRONG for this county
library(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "04",
county = "005",
year = 2022
)
ZIP Codes in Coconino 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 Coconino County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 86435 | 100.0% |
| 86001 | 100.0% |
| 86003 | 100.0% |
| 86004 | 100.0% |
| 86005 | 100.0% |
| 86011 | 100.0% |
| 86015 | 100.0% |
| 86016 | 100.0% |
| 86017 | 100.0% |
| 86018 | 100.0% |
| 86020 | 100.0% |
| 86035 | 100.0% |
| 86036 | 100.0% |
| 86038 | 100.0% |
| 86040 | 100.0% |
| 86045 | 100.0% |
| 86046 | 100.0% |
| 86052 | 100.0% |
| 86053 | 100.0% |
| 85931 | 100.0% |
| 86023 | 100.0% |
| 86024 | 100.0% |
| 86030 | 73.3% |
| 86320 | 70.4% |
| 86022 | 67.6% |
| 86044 | 55.5% |
| 86047 | 28.4% |
| 86336 | 27.1% |
| 86337 | 24.7% |
| 86054 | 5.9% |
Showing top 30 of 31 ZIP codes by residential address share.