53033 FipsDecoder
34001 County FIPS Code

Atlantic County

New Jersey · County seat: Mays Landing · Active county or equivalent

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FIPS code 34001 is Atlantic County, New Jersey. With a population of 274,339 (2022 ACS estimate), it ranks #15 in New Jersey and #252 nationally. Atlantic County is part of the Atlantic City-Hammonton, NJ. The state FIPS code for New Jersey is 34. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.

County FIPS

34001

State FIPS

34

NJ

Population

274,339

2022 ACS · #252 nationally

Density

493.7/mi²

people per sq mile

Land Area

556

sq miles

Urban/Rural

Metro — 250K–1M population

RUCC 2

How This FIPS Code Works

34 001
34 = State FIPS (New Jersey)
001 = County FIPS

The 5-digit FIPS code 34001 is formed by combining the 2-digit state identifier 34 (New Jersey) with the 3-digit county identifier 001. Together they uniquely identify Atlantic County in every US federal dataset. No two counties share the same 5-digit FIPS code.

Census ACS Data for FIPS 34001

From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 34001.

Median Household Income

$73,113

ACS B19013_001E

Poverty Rate

13.0%

ACS B17001 (below poverty level)

Median Age

42.0

ACS B01002_001E

Metropolitan Area

Adjacent Counties (6)

Counties that share a border with Atlantic County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 34001.

Federal Datasets Using Code 34001

FIPS code 34001 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 34001 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.

Census ACS API — Python 34001
import requests

url = "https://api.census.gov/data/2022/acs/acs5"
params = {
    "get":  "NAME,B19013_001E,B01003_001E",
    "for":  "county:001",
    "in":   "state:34",
    "key":  "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json()  # [[header...], [Atlantic County, New Jersey, income, pop, ...]
SQL — filtering by county FIPS 34001
-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '34001';

-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '34'
  AND county_fips = '001';

-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 34001 is WRONG for this county
R — tidycensus 34001
library(tidycensus)

get_acs(
  geography = "county",
  variables = c(income = "B19013_001E", pop = "B01003_001E"),
  state     = "34",
  county    = "001",
  year      = 2022
)
Zero-padding reminder: FIPS codes must always be stored and compared as zero-padded strings. 34 (not 34) and 001 (not 1) — losing the leading zeros is one of the most common data-join bugs in federal datasets. Full guide →

ZIP Codes in Atlantic 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 Atlantic County. Why FIPS ≠ ZIP →

ZIP Code % in county
08406 100.0%
08330 100.0%
08341 100.0%
08346 100.0%
08350 100.0%
08401 100.0%
08402 100.0%
08403 100.0%
08201 100.0%
08203 100.0%
08205 100.0%
08217 100.0%
08221 100.0%
08225 100.0%
08232 100.0%
08234 100.0%
08240 100.0%
08241 100.0%
08244 100.0%
08310 100.0%
08317 100.0%
08319 100.0%
08326 100.0%
08037 80.0%
08215 54.7%
08360 25.9%
08270 22.3%
08340 18.8%
08094 10.2%
08344 8.7%

Other Counties in New Jersey