Williams ZIP Code List — Colusa County, CA

There is one unique ZIP code in Williams, California and it is 95987. Area code: 530.

ZIP codes

316.98

sq mi land

0.05

sq mi water

530

area code

Williams, CA ZIP code map

About Williams, CA

Williams is a charming city located in northern California, known for its rich agricultural land and picturesque landscapes. Situated in Colusa County, it serves as a gateway to the Sacramento Valley, welcoming visitors with its small-town charm. With a strong sense of community, Williams celebrates its history and culture while looking to the future.

Location & geography

Williams is located in Colusa County, California, boasting a land area of 316.98 square miles. The city is surrounded by several other cities, including Colusa at approximately 12 miles to the northwest, Arbuckle about 10 miles to the west, and the greater Yuba City area approximately 25 miles to the south. A small water area of 0.05 square miles complements its vast land area, providing a diverse terrain that includes farmland and rolling hills.

Community & economy

The character of Williams is defined by its agricultural roots, with many residents engaged in farming and related industries. Daily life in Williams revolves around community events, local businesses, and strong family ties, making it a welcoming place for residents and visitors alike. The city reflects a blend of rural living and the vibrancy of local culture, with annual events celebrating its heritage.

Transportation

Williams is easily accessible via Interstate 5, which runs north and south along the western edge of the city, providing a critical link to larger urban areas. The nearest named airport is the Sacramento International Airport, located about 40 miles south, offering both domestic and international flights. Public transit options may be limited, but the city’s location makes it convenient for regional travel.

History

Williams was founded in the late 19th century, originally serving as a railroad station that supported regional agriculture. The city has historically been centered around farming, with key industries including agriculture and food production. Notable events in its history include the establishment of a community focus on sustainability and conservation, which has shaped its development.

Did you know?

One surprising fact about Williams is that it is home to the famous 'Gateway to the Sacramento Valley' sign, which welcomes travelers as they enter the city. Additionally, the nearby Sacramento National Wildlife Refuge attracts nature enthusiasts and bird watchers, showcasing the region's commitment to environmental conservation.

ZIP codes for Williams, CA (1)

ZIP code	City	County	Map
95987	Williams	Colusa	View map

Demographics & statistics

6,504

Population

32.5

Median age

$82,935

Median household income

$30,816

Per capita income

$359,600

Median home value

$1,202

Median monthly rent

56.8%

Home ownership

6.2%

Poverty rate

12.6%

Unemployment

1,194

Housing units

14.8%

Bachelor's or higher

Age distribution

Male Female

291

Under 5

298

247

5–9

252

226

10–14

231

268

15–19

273

242

20–24

248

473

25–34

483

448

35–44

457

373

45–54

382

162

55–59

165

112

60–64

114

193

65–74

197

75–84

114

85+

117

← Male

Female →

Age summary

Group	Count	%
Under 18	1,916	29.5%
18 and over	4,588	70.5%
65 and over	759	11.7%
Median age	32.5 years

Race & ethnicity

White 45.6%

Hispanic or Latino 25.7%

Two or more races 14.1%

Other race 12.1%

American Indian / Alaska Native 1.6%

Asian 0.6%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	3,995	45.6%
Hispanic or Latino	2,250	25.7%
Two or more races	1,237	14.1%
Other race	1,059	12.1%
American Indian / Alaska Native	144	1.6%
Asian	53	0.6%
Native Hawaiian / Pacific Islander	12	0.1%

Household income

Under $10k 2.7%

$10k–$15k 2.0%

$15k–$25k 7.9%

$25k–$35k 8.0%

$35k–$50k 10.8%

$50k–$75k 10.8%

$75k–$100k 21.6%

$100k–$150k 12.8%

$150k–$200k 13.5%

$200k+ 9.8%

Range	% of households
Under $10k	2.7%
$10k–$15k	2.0%
$15k–$25k	7.9%
$25k–$35k	8.0%
$35k–$50k	10.8%
$50k–$75k	10.8%
$75k–$100k	21.6%
$100k–$150k	12.8%
$150k–$200k	13.5%
$200k+	9.8%
Median income	$82,935

Housing

Home values

$100k–$150k 1.3%

$150k–$200k 6.0%

$200k–$300k 23.5%

$300k–$500k 45.8%

$500k–$1M 17.6%

$1M+ 5.8%

Housing overview

Metric	Value
Median home value	$359,600
Median rent / month	$1,202
Owner occupied	56.8%
Renter occupied	43.2%
Vacant	6.4%
Single-family detached	88.0%
Large apartment buildings	2.2%
Mobile homes	2.8%
Median rooms	5.2
Avg household size (owned)	3.53

Year built

Era	%
2020 or later	0.0%
2010–2019	8.9%
2000–2009	26.6%
1990–1999	18.1%
1980–1989	7.0%
1970–1979	14.2%
1960–1969	5.4%
1950–1959	11.4%
1940–1949	2.5%
1939 or earlier	5.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.1%
1 bedroom	6.0%
2 bedrooms	20.8%
3 bedrooms	56.0%
4 bedrooms	13.8%
5+ bedrooms	3.3%

Vehicles per household

Vehicles	% of households
No vehicle	4.2%
1 vehicle	24.0%
2 vehicles	24.4%
3 or more	47.4%

Heating fuel

Fuel type	%
Utility gas	43.7%
Electricity	40.6%
Propane / LP gas	7.7%
Wood	3.4%
Solar	3.0%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	1,261	67.1%
Cohabiting couple	72	3.8%
Male householder, no spouse	287	15.3%
Female householder, no spouse	258	13.7%
Households with children under 18	1,005	53.5%
Households with seniors (65+)	516	27.5%
Average household size	3.39

Marital status

Status	Male	Female
Never married	31.5%	33.8%
Married	60.4%	53.6%
Separated	0.0%	0.7%
Widowed	4.8%	5.7%
Divorced	3.3%	6.1%

Education

Less than 9th grade 20.9%

Some HS, no diploma 13.6%

HS graduate 30.5%

Some college, no degree 12.5%

Associate's degree 7.7%

Bachelor's degree 13.9%

Graduate / professional 0.9%

Metric	%
HS diploma or higher	65.5%
Bachelor's or higher	14.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	90	5.2%
Kindergarten	152	8.8%
Elementary school	730	42.4%
High school	460	26.7%
College / grad school	290	16.8%

Employment

Industry of employment

Agriculture & mining 19.9%

Education & healthcare 13.5%

Arts, food & hospitality 13.1%

Transportation & utilities 12.9%

Manufacturing 10.9%

Retail trade 8.0%

Public administration 7.3%

Wholesale trade 4.1%

Construction 3.5%

Other services 3.4%

Finance & real estate 1.5%

Professional & management 1.5%

Information 0.6%

Occupation

Category	%
Management, business & arts	15.5%
Service	20.3%
Sales & office	22.4%
Natural resources & construction	23.1%
Production & transportation	18.6%

Employment type

Type	%
Private sector	66.6%
Government	19.8%
Self-employed	13.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	85.7%
Carpool	8.3%
Public transit	0.3%
Walk	1.3%
Other means	1.6%
Avg commute (minutes)	26.6

Poverty

All people 6.2%

Under 18 years 7.2%

18 and over 5.7%

Married-couple families 4.1%

Female-led households 11.9%

Income support

Source	% of households
Social Security	22.5%
Retirement income	4.2%
Supplemental Security	3.8%
Cash public assistance	3.2%
Food stamps / SNAP	15.9%

Health indicators

Condition	%
High blood pressure	26.6%
High cholesterol	28.1%
Heart disease	5.5%
Stroke	2.8%
Asthma	9.9%
Arthritis	19.3%
Kidney disease	2.8%
Pulmonary disease	6.1%
Cancer	4.7%

Behavior / access	%
Binge drinking	18.9%
No physical activity	26.8%
Less than 7 hrs sleep	33.4%
Fair or poor health	19.3%
Poor mental health	16.1%
Poor physical health	11.6%
No health insurance	23.5%
Visited doctor (checkup)	63.9%
Visited dentist	55.2%
Cholesterol screening	87.3%
Teeth loss	16.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	116	2.5%

Disability	%
Any disability	8.1%
Under 18	1.3%
18–64 years	7.3%
65 and over	32.1%

Health insurance coverage

Type	%
Private insurance	49.0%
Public insurance	47.1%
Uninsured under 19	9.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	5,915	90.9%
Spanish	1,315	22.2%
Other Indo-European	1,312	22.2%
Asian & Pacific Islander	3	0.1%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,231	65.1%
Born in same state	4,193	64.5%
Born in different state	3,892	59.8%
Foreign born	38	0.6%
Naturalized citizen	2,273	34.9%
Not a US citizen	852	37.5%

Ancestry

Ancestry	Count	%
Italian	268	4.1%
Arab	211	3.2%

Ancestry	Count	%
French	186	2.9%
English	36	0.6%

Technology access

Metric	% of households
Computer access	28.9%
Internet access	88.6%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What is the ZIP code for Williams, CA?

Williams, CA has one ZIP code: 95987.

What is the main ZIP code for Williams, CA?

The primary ZIP code for Williams, CA is 95987. The city uses area code 530 for phone service.

What county is Williams, CA in?

Williams is located in Colusa County, California.

How many ZIP codes are in Williams, CA?

Williams, CA has 1 ZIP code.

What is the ZIP code for downtown Williams and the surrounding historic district?

Downtown Williams and the historic district in the heart of the city are located in ZIP code 95987, which covers the entire Williams area in Colusa County.

What ZIP code should I use for mailing addresses to businesses and residences in Williams, CA?

All mailing addresses in Williams, California should use the ZIP code 95987, as this is the single ZIP code that serves the entire city.