FIPS code 19045 is Clinton County, Iowa. With a population of 46,488 (2022 ACS estimate), it ranks #12 in Iowa and #1053 nationally. Clinton County is part of the Clinton, IA. The state FIPS code for Iowa is 19. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
19045
Population
46,488
2022 ACS · #1053 nationally
Density
66.9/mi²
people per sq mile
Land Area
695
sq miles
Urban/Rural
Nonmetro — urban 20K+, adjacent to metro
RUCC 4
How This FIPS Code Works
The 5-digit FIPS code 19045 is formed by combining the 2-digit state identifier 19 (Iowa) with the 3-digit county identifier 045. Together they uniquely identify Clinton County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 19045
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 19045.
Median Household Income
$61,080
ACS B19013_001E
Poverty Rate
12.4%
ACS B17001 (below poverty level)
Median Age
42.5
ACS B01002_001E
Metropolitan Area
Adjacent Counties (7)
Counties that share a border with Clinton County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 19045.
Federal Datasets Using Code 19045
FIPS code 19045 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 19045 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:045",
"in": "state:19",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Clinton County, Iowa, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '19045';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '19'
AND county_fips = '045';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 19045 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "19",
county = "045",
year = 2022
)ZIP Codes in Clinton 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 Clinton County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 52732 | 100.0% |
| 52774 | 100.0% |
| 52771 | 100.0% |
| 52757 | 100.0% |
| 52751 | 100.0% |
| 52750 | 100.0% |
| 52254 | 100.0% |
| 52742 | 100.0% |
| 52701 | 100.0% |
| 52727 | 100.0% |
| 52730 | 100.0% |
| 52729 | 99.0% |
| 52731 | 98.2% |
| 52037 | 97.8% |
| 52777 | 92.5% |
| 52069 | 22.4% |
| 52070 | 15.5% |
| 52064 | 14.1% |
| 52323 | 13.2% |
| 52207 | 12.8% |
| 52060 | 11.9% |