Silver Bow County
Montana · County seat: Butte · County equivalent (e.g. borough in AK, parish in LA)
FIPS code 30093 is Silver Bow County, Montana. With a population of 35,306 (2022 ACS estimate), it ranks #8 in Montana and #1320 nationally. Silver Bow County is part of the Butte-Silver Bow, MT. The state FIPS code for Montana is 30. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
30093
Population
35,306
2022 ACS · #1320 nationally
Density
49.1/mi²
people per sq mile
Land Area
718
sq miles
Urban/Rural
Nonmetro — urban 20K+, not adjacent to metro
RUCC 5
How This FIPS Code Works
The 5-digit FIPS code 30093 is formed by combining the 2-digit state identifier 30 (Montana) with the 3-digit county identifier 093. Together they uniquely identify Silver Bow County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 30093
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 30093.
Median Household Income
$56,297
ACS B19013_001E
Poverty Rate
15.9%
ACS B17001 (below poverty level)
Median Age
40.3
ACS B01002_001E
Metropolitan Area
Adjacent Counties (4)
Counties that share a border with Silver Bow County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 30093.
Federal Datasets Using Code 30093
FIPS code 30093 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 30093 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:093",
"in": "state:30",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Silver Bow County, Montana, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '30093';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '30'
AND county_fips = '093';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 30093 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "30",
county = "093",
year = 2022
)ZIP Codes in Silver Bow 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 Silver Bow County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 59750 | 100.0% |
| 59748 | 100.0% |
| 59727 | 79.6% |
| 59701 | 48.6% |
| 59711 | 11.0% |
| 59743 | 9.4% |
| 59759 | 6.5% |