FIPS code 51730 is Petersburg city, Virginia. With a population of 33,261 (2022 ACS estimate), it ranks #54 in Virginia and #1376 nationally. Petersburg city is part of the Richmond, VA. The state FIPS code for Virginia is 51. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
51730
Population
33,261
2022 ACS · #1376 nationally
Density
1,450.6/mi²
people per sq mile
Land Area
23
sq miles
Urban/Rural
Metro — 1M+ population
RUCC 1
How This FIPS Code Works
The 5-digit FIPS code 51730 is formed by combining the 2-digit state identifier 51 (Virginia) with the 3-digit county identifier 730. Together they uniquely identify Petersburg city in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 51730
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 51730.
Median Household Income
$46,930
ACS B19013_001E
Poverty Rate
22.2%
ACS B17001 (below poverty level)
Median Age
36.6
ACS B01002_001E
Metropolitan Area
Adjacent Counties (4)
Counties that share a border with Petersburg city. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 51730.
Federal Datasets Using Code 51730
FIPS code 51730 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 51730 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:730",
"in": "state:51",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Petersburg city, Virginia, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '51730';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '51'
AND county_fips = '730';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 51730 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "51",
county = "730",
year = 2022
)ZIP Codes in Petersburg city
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 Petersburg city. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 23805 | 16.9% |
| 23803 | 14.8% |