Randolph County
Indiana · County seat: Winchester · Active county or equivalent
FIPS code 18135 is Randolph County, Indiana. With a population of 24,586 (2022 ACS estimate), it ranks #63 in Indiana and #1666 nationally. The state FIPS code for Indiana is 18. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
18135
Population
24,586
2022 ACS · #1666 nationally
Density
54.4/mi²
people per sq mile
Land Area
452
sq miles
Urban/Rural
Nonmetro — urban 2.5K–19.9K, adjacent to metro
RUCC 6
How This FIPS Code Works
The 5-digit FIPS code 18135 is formed by combining the 2-digit state identifier 18 (Indiana) with the 3-digit county identifier 135. Together they uniquely identify Randolph County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 18135
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 18135.
Median Household Income
$59,674
ACS B19013_001E
Poverty Rate
13.0%
ACS B17001 (below poverty level)
Median Age
42.8
ACS B01002_001E
Adjacent Counties (5)
Counties that share a border with Randolph County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 18135.
Federal Datasets Using Code 18135
FIPS code 18135 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 18135 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:135",
"in": "state:18",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Randolph County, Indiana, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '18135';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '18'
AND county_fips = '135';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 18135 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "18",
county = "135",
year = 2022
)ZIP Codes in Randolph 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 Randolph County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 47382 | 100.0% |
| 47340 | 100.0% |
| 47394 | 100.0% |
| 47355 | 98.6% |
| 47358 | 93.6% |
| 47390 | 93.1% |
| 47380 | 88.6% |
| 47368 | 76.7% |
| 47354 | 56.7% |
| 47393 | 12.0% |
| 47373 | 5.7% |
| 47320 | 5.0% |
| 47360 | 1.4% |
| 47371 | 0.1% |