53033 FipsDecoder
53035 County FIPS Code

Kitsap County

Washington · County seat: Port Orchard · Active county or equivalent

View on CensusDepth ↗

FIPS code 53035 is Kitsap County, Washington. With a population of 275,411 (2022 ACS estimate), it ranks #7 in Washington and #251 nationally. Kitsap County is part of the Bremerton-Silverdale-Port Orchard, WA. The state FIPS code for Washington is 53. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.

County FIPS

53035

State FIPS

53

WA

Population

275,411

2022 ACS · #251 nationally

Density

697.4/mi²

people per sq mile

Land Area

395

sq miles

Urban/Rural

Metro — 250K–1M population

RUCC 2

How This FIPS Code Works

53 035
53 = State FIPS (Washington)
035 = County FIPS

The 5-digit FIPS code 53035 is formed by combining the 2-digit state identifier 53 (Washington) with the 3-digit county identifier 035. Together they uniquely identify Kitsap County in every US federal dataset. No two counties share the same 5-digit FIPS code.

Census ACS Data for FIPS 53035

From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 53035.

Median Household Income

$93,675

ACS B19013_001E

Poverty Rate

8.3%

ACS B17001 (below poverty level)

Median Age

39.7

ACS B01002_001E

Metropolitan Area

Adjacent Counties (6)

Counties that share a border with Kitsap County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 53035.

Federal Datasets Using Code 53035

FIPS code 53035 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 53035 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 53035
import requests

url = "https://api.census.gov/data/2022/acs/acs5"
params = {
    "get":  "NAME,B19013_001E,B01003_001E",
    "for":  "county:035",
    "in":   "state:53",
    "key":  "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json()  # [[header...], [Kitsap County, Washington, income, pop, ...]
SQL — filtering by county FIPS 53035
-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '53035';

-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '53'
  AND county_fips = '035';

-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 53035 is WRONG for this county
R — tidycensus 53035
library(tidycensus)

get_acs(
  geography = "county",
  variables = c(income = "B19013_001E", pop = "B01003_001E"),
  state     = "53",
  county    = "035",
  year      = 2022
)
Zero-padding reminder: FIPS codes must always be stored and compared as zero-padded strings. 53 (not 53) and 035 (not 35) — losing the leading zeros is one of the most common data-join bugs in federal datasets. Full guide →

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

ZIP Code % in county
98110 100.0%
98310 100.0%
98311 100.0%
98367 100.0%
98370 100.0%
98383 100.0%
98392 100.0%
98314 100.0%
98315 100.0%
98337 100.0%
98340 100.0%
98342 100.0%
98345 100.0%
98346 100.0%
98353 100.0%
98359 100.0%
98364 100.0%
98366 100.0%
98312 99.9%
98380 93.6%
98329 1.0%
98528 0.1%

Other Counties in Washington