Zip code 94931: Cotati, California

Q: What city is zip code 94931?

94931 is assigned to Cotati, California. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 94931 in?

94931 is in Sonoma County, California.

Q: What is the population of 94931?

About 9,487 people live in 94931, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 94931?

The median household income in 94931 is $101,994.

Q: What zip codes are near 94931?

The closest zip codes to 94931 are 94926, 94927, 94928, 94951, 94999.

Residential delivery areaSonoma CountyPacific Time

Population

9,487

Median household income

$102K

U.S. $81K

Median home value

$820K

U.S. $333K

Median rent

$1,913/mo

U.S. $1,413

Median age

39.2

U.S. 38.9

Land area

7.7 sq mi

1,227 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 94931

94931 is a suburban zip code in Cotati, California (Sonoma County), covering 7.7 sq mi of land. About 9,487 people live here, or 1,227 per square mile. The median resident is 39.2 years old, compared with 38.9 nationally.

The median household earns $101,994 a year, 26% above the national median of $80,734. 8.6% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $820,000, or 8.0 years of median household income (U.S.: 4.1 years), which makes homes relatively expensive for local earners. 59% of occupied homes are lived in by their owners, and renters pay a median of $1,913 a month.

36% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 27.8 minutes each way, and 15% of workers work from home. The most common jobs among working residents are in management; office and administrative support; and construction and repair.

How 94931 compares

Sorted from highest to lowest national percentile

Median home value$820,000
91st
U.S. $332,700 · CA $734,700586th of 1,586 in CA
Median gross rent$1,913
80th
U.S. $1,413 · CA $2,036730th of 1,464 in CA
Per capita income$55,275
79th
U.S. $44,673 · CA $49,513550th of 1,685 in CA
Government workers18.5%
79th
U.S. 14.5% · CA 14.8%522nd of 1,678 in CA
Median earnings per worker$60,884
77th
U.S. $49,666 · CA $52,643582nd of 1,658 in CA
Median household income$101,994
73rd
U.S. $80,734 · CA $99,122670th of 1,575 in CA
Tech workers3.7%
64th
U.S. 3.8% · CA 4.4%531st of 1,678 in CA
Residents 65 and older18.2%
62nd
U.S. 17.2% · CA 15.7%737th of 1,688 in CA
Average commute27.8 min
61st
U.S. 26.4 min · CA 28.7 min800th of 1,584 in CA
Work from home14.9%
60th
U.S. 15.1% · CA 17.2%861st of 1,680 in CA
Bachelor's degree or higher36.1%
59th
U.S. 35.7% · CA 37.1%724th of 1,687 in CA
Broadband access93%
58th
U.S. 91% · CA 93.5%900th of 1,662 in CA
Veterans6.2%
55th
U.S. 6.2% · CA 4.3%522nd of 1,686 in CA
Foreign-born residents11.5%
55th
U.S. 14.1% · CA 27%1,229th of 1,688 in CA
Diversity index50.9
53rd
U.S. 61.4 · CA 69.7990th of 1,688 in CA
Median age39.2
51st
U.S. 38.9 · CA 37.9909th of 1,687 in CA
Population density1,227/sq mi
47th
U.S. 95/sq mi · CA 252/sq mi814th of 1,688 in CA
Income inequality (Gini)0.426
42nd
U.S. 0.483 · CA 0.489993rd of 1,651 in CA
Poverty rate8.6%
36th
U.S. 12.5% · CA 12%1,063rd of 1,666 in CA
Self-employed workers8.1%
34th
U.S. 10% · CA 11.4%1,274th of 1,678 in CA
Uninsured rate5%
33rd
U.S. 8.4% · CA 6.6%901st of 1,675 in CA
Homeownership rate59.2%
31st
U.S. 65.2% · CA 55.9%978th of 1,662 in CA
Unemployment rate3.4%
23rd
U.S. 5.2% · CA 6.6%1,428th of 1,681 in CA
Rent-burdened renters42.2%
21st
U.S. 51.1% · CA 55.3%1,332nd of 1,610 in CA
Population9,487
15th
U.S. 334,922,499 · CA 39,287,3771,015th of 1,688 in CA
Healthcare workers7%
15th
U.S. 9.7% · CA 9.4%1,223rd of 1,678 in CA
Residents under 1815.6%
9th
U.S. 22% · CA 22%1,304th of 1,688 in CA
Housing vacancy1.5%
2nd
U.S. 10.1% · CA 7.5%1,589th of 1,664 in CA

Measure	94931	Sonoma	CA	U.S.	National percentile	Rank in CA
Median home value	$820,000	$815,500	$734,700	$332,700	91st	586th of 1,586
Median gross rent	$1,913	$2,158	$2,036	$1,413	80th	730th of 1,464
Per capita income	$55,275	$56,640	$49,513	$44,673	79th	550th of 1,685
Government workers	18.5%	13.8%	14.8%	14.5%	79th	522nd of 1,678
Median earnings per worker	$60,884	$57,332	$52,643	$49,666	77th	582nd of 1,658
Median household income	$101,994	$104,674	$99,122	$80,734	73rd	670th of 1,575
Tech workers	3.7%	2.6%	4.4%	3.8%	64th	531st of 1,678
Residents 65 and older	18.2%	21.5%	15.7%	17.2%	62nd	737th of 1,688
Average commute	27.8 min	25.1 min	28.7 min	26.4 min	61st	800th of 1,584
Work from home	14.9%	15.9%	17.2%	15.1%	60th	861st of 1,680
Bachelor's degree or higher	36.1%	38.5%	37.1%	35.7%	59th	724th of 1,687
Broadband access	93%	94.4%	93.5%	91%	58th	900th of 1,662
Veterans	6.2%	4.8%	4.3%	6.2%	55th	522nd of 1,686
Foreign-born residents	11.5%	16.8%	27%	14.1%	55th	1,229th of 1,688
Diversity index	50.9	57	69.7	61.4	53rd	990th of 1,688
Median age	39.2	42.9	37.9	38.9	51st	909th of 1,687
Population density	1,227/sq mi	308/sq mi	252/sq mi	95/sq mi	47th	814th of 1,688
Income inequality (Gini)	0.426	0.462	0.489	0.483	42nd	993rd of 1,651
Poverty rate	8.6%	8.9%	12%	12.5%	36th	1,063rd of 1,666
Self-employed workers	8.1%	13.6%	11.4%	10%	34th	1,274th of 1,678
Uninsured rate	5%	5.1%	6.6%	8.4%	33rd	901st of 1,675
Homeownership rate	59.2%	62.6%	55.9%	65.2%	31st	978th of 1,662
Unemployment rate	3.4%	5.7%	6.6%	5.2%	23rd	1,428th of 1,681
Rent-burdened renters	42.2%	54.8%	55.3%	51.1%	21st	1,332nd of 1,610
Population	9,487	485,040	39,287,377	334,922,499	15th	1,015th of 1,688
Healthcare workers	7%	9.9%	9.4%	9.7%	15th	1,223rd of 1,678
Residents under 18	15.6%	19%	22%	22%	9th	1,304th of 1,688
Housing vacancy	1.5%	8%	7.5%	10.1%	2nd	1,589th of 1,664

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

10%

5–17

18–24

17%

25–34

18%

35–44

10%

45–54

13%

55–64

10%

65–74

75+

Median age

39.2

Under 18

15.6%

65 and over

18.2%

Race and ethnicity

White65%
Black0.9%
Hispanic24%
Asian2%
Native American0.0%
Pacific Islander0%
Other1%
Multiracial6%

Diversity index

50.9

U.S. 61.4

Foreign-born

11.5%

U.S. 14.1%

Born in state

66.2%

Language spoken at home (households)

English only

80%

Spanish

14%

Other Indo-European

Asian / Pacific

Other

Households

Households: 4,072
Average household size: 2.3
Family households: 52.1%
Married couples: 40.3%
Living alone: 34.3%
Veterans (of adults): 6.2%
Male / female: 50% / 50%

Income and poverty

Household income distribution

<$25k

11%

$25–50k

10%

$50–75k

17%

$75–100k

10%

$100–150k

21%

$150–200k

12%

$200k+

18%

Median household income

94931

$101,994

Sonoma Co.

$104,674

California

$99,122

United States

$80,734

Per capita income

$55,275

U.S. $44,673

Poverty rate

8.6%

U.S. 12.5%

Households earning $150K+

30.5%

U.S. 23%

Income inequality (Gini)

0.426

U.S. 0.483

Housing

Median home value

94931

$820,000

Sonoma Co.

$815,500

California

$734,700

United States

$332,700

Median gross rent

94931

$1,913

Sonoma Co.

$2,158

California

$2,036

United States

$1,413

Types of housing

Single-family

71%

2–4 units

13%

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 4,134
Owner-occupied: 59.2%
Vacant: 1.5%
Median year built: 1982
Median rooms: 4.6
Renters paying 30%+ of income: 42.2%
Renters paying 50%+ of income: 14.7%
Home value to income: 8.0× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

72%

Carpooled

Transit

Walked

0.8%

Bicycle

0.4%

Worked from home

15%

Other

Commute time (one way)

<10 min

10%

10–19

34%

20–29

15%

30–44

19%

45–59

11%

60+

12%

Average commute

27.8 min

U.S. 26.4 min

Unemployment

3.4%

U.S. 5.2%

In labor force

68.2%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

16%

Office and admin

13%

Construction and repair

Sales

Healthcare

Cleaning and personal care

Business and finance

Food service

Police and fire

Education

Computer and math

Production

Transportation and moving

Engineering and science

Arts, media and sports

Legal and social services

Farming, fishing and forestry

Industries

Health care and social assistance

15%

Retail

11%

Education

11%

Manufacturing

10%

Construction

Public administration

Restaurants and hotels

Professional and technical services

Admin, support and management

Finance, insurance and real estate

Other services

Arts and recreation

Transportation, warehousing and utilities

Wholesale

Information

Agriculture and mining

0.8%

Median earnings per worker

$60,884

U.S. $49,666

Self-employed

8.1%

U.S. 10%

Government workers

18.5%

U.S. 14.5%

Nonprofit workers

10.2%

U.S. 8.8%

Median earnings by type of work

Type of work	94931	U.S.
Management, business, science and arts	$85,608	$74,888
Service	$40,781	$26,804
Sales and office	$50,060	$40,476
Construction and maintenance	$47,488	$49,199
Production and transportation	$42,870	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

19%

Some college

30%

Associate's

12%

Bachelor's

26%

Graduate

11%

High school graduate or higher: 96.5%
Bachelor's degree or higher: 36.1%
Graduate or professional degree: 10.6%
Households with broadband: 93%
Cable, fiber or DSL: 78.1%
No internet access: 5.2%
Without health insurance: 5%
Limited-English households: 3.9%

Geography

City (USPS): Cotati
State: California
County: Sonoma County
Center point: 38.3252° N, 122.7170° W
Land area: 7.7 sq mi
Water area: under 0.1 sq mi
Time zone: Pacific Time (UTC-8, UTC-7 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Cotati24% of zip
Penngrove (unincorporated)1% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 94931

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
94926	Rohnert Park, CA · PO box	1.3 mi	—	—	—
94927	Rohnert Park, CA · PO box	1.3 mi	—	—	—
94928	Rohnert Park, CA	1.9 mi	46,829	$99,280	$666,000
94951	Penngrove, CA	3.9 mi	3,294	$106,332	$1,207,000
94999	Petaluma, CA · PO box	5.1 mi	—	—	—
95407	Santa Rosa, CA	5.1 mi	42,036	$82,863	$627,100
94952	Petaluma, CA	6.7 mi	33,785	$117,343	$1,041,100
94953	Petaluma, CA · PO box	7.7 mi	—	—	—
94955	Petaluma, CA · PO box	7.7 mi	—	—	—
94975	Petaluma, CA · PO box	7.7 mi	—	—	—
95473	Sebastopol, CA · PO box	7.8 mi	—	—	—
95402	Santa Rosa, CA · PO box	7.9 mi	—	—	—

Zip codes like 94931 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 94931

What city is zip code 94931?

94931 is assigned to Cotati, California. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 94931 in?

94931 is in Sonoma County, California.

What is the population of 94931?

About 9,487 people live in 94931, according to the Census Bureau's American Community Survey.

What time zone is 94931 in?

94931 is in Pacific Time.

What is the median household income in 94931?

The median household income in 94931 is $101,994.

What zip codes are near 94931?

The closest zip codes to 94931 are 94926, 94927, 94928, 94951, 94999.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 94931, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.