FIPS code 29161 is Phelps County, Missouri. With a population of 44,843 (2022 ACS estimate), it ranks #23 in Missouri and #1087 nationally. Phelps County is part of the Rolla, MO. The state FIPS code for Missouri is 29. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
29161
Population
44,843
2022 ACS · #1087 nationally
Density
66.8/mi²
people per sq mile
Land Area
672
sq miles
Urban/Rural
Nonmetro — urban 20K+, not adjacent to metro
RUCC 5
How This FIPS Code Works
The 5-digit FIPS code 29161 is formed by combining the 2-digit state identifier 29 (Missouri) with the 3-digit county identifier 161. Together they uniquely identify Phelps County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 29161
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 29161.
Median Household Income
$53,242
ACS B19013_001E
Poverty Rate
17.7%
ACS B17001 (below poverty level)
Median Age
36.0
ACS B01002_001E
Metropolitan Area
Adjacent Counties (6)
Counties that share a border with Phelps County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 29161.
Federal Datasets Using Code 29161
FIPS code 29161 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 29161 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:161",
"in": "state:29",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Phelps County, Missouri, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '29161';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '29'
AND county_fips = '161';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 29161 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "29",
county = "161",
year = 2022
)ZIP Codes in Phelps 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 Phelps County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 65409 | 100.0% |
| 65529 | 100.0% |
| 65436 | 95.3% |
| 65550 | 92.2% |
| 65462 | 84.8% |
| 65401 | 83.0% |
| 65559 | 78.8% |
| 65461 | 49.2% |
| 65449 | 8.5% |
| 65459 | 5.5% |
| 65560 | 1.8% |
| 65542 | 0.9% |