53033 FipsDecoder
06049 County FIPS Code

Modoc County

California · County seat: Alturas · Active county or equivalent

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FIPS code 06049 is Modoc County, California. With a population of 8,651 (2022 ACS estimate), it ranks #56 in California and #2590 nationally. The state FIPS code for California is 06. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.

County FIPS

06049

State FIPS

06

CA

Population

8,651

2022 ACS · #2590 nationally

Density

2.2/mi²

people per sq mile

Land Area

3,918

sq miles

Urban/Rural

Nonmetro — rural, adjacent to metro

RUCC 8

How This FIPS Code Works

06 049
06 = State FIPS (California)
049 = County FIPS

The 5-digit FIPS code 06049 is formed by combining the 2-digit state identifier 06 (California) with the 3-digit county identifier 049. Together they uniquely identify Modoc County in every US federal dataset. No two counties share the same 5-digit FIPS code.

Census ACS Data for FIPS 06049

From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 06049.

Median Household Income

$54,962

ACS B19013_001E

Poverty Rate

16.9%

ACS B17001 (below poverty level)

Median Age

47.5

ACS B01002_001E

Adjacent Counties (6)

Counties that share a border with Modoc County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 06049.

Federal Datasets Using Code 06049

FIPS code 06049 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 06049 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 06049
import requests

url = "https://api.census.gov/data/2022/acs/acs5"
params = {
    "get":  "NAME,B19013_001E,B01003_001E",
    "for":  "county:049",
    "in":   "state:06",
    "key":  "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json()  # [[header...], [Modoc County, California, income, pop, ...]
SQL — filtering by county FIPS 06049
-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '06049';

-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '06'
  AND county_fips = '049';

-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 6049 is WRONG for this county
R — tidycensus 06049
library(tidycensus)

get_acs(
  geography = "county",
  variables = c(income = "B19013_001E", pop = "B01003_001E"),
  state     = "06",
  county    = "049",
  year      = 2022
)
Zero-padding reminder: FIPS codes must always be stored and compared as zero-padded strings. 06 (not 6) and 049 (not 49) — losing the leading zeros is one of the most common data-join bugs in federal datasets. Full guide →

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

ZIP Code % in county
96112 100.0%
96015 100.0%
96054 100.0%
96116 100.0%
96101 100.0%
96104 100.0%
96108 100.0%
96115 100.0%
96110 96.2%
97635 92.8%
96134 65.8%
96006 36.1%
96056 13.8%

Other Counties in California