87942 ZIP Code — Williamsburg, NM

Sierra County, New Mexico

ZIP code 87942 is located in Williamsburg, New Mexico, within Sierra County. It covers approximately 144.37 square miles and serves a population of 1,542 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 575.

About ZIP code 87942

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $113,600. Owner-occupancy is high at 86%, well above the national average.

Median household income is $34,967. Poverty affects 24% of residents, above the national average. 49% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with agriculture and mining as the leading industry. The average commute of 23 minutes is near the national average.

Health indicators show elevated rates of diabetes (16%) compared to national benchmarks.

Notable community characteristics include disability rates above the national average at 34%.

Overall, ZIP code 87942 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, high homeownership, and a significant Social Security-dependent population.

1,542

population

144.37

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

87942 ZIP code map

Cities in ZIP code 87942

Below are the cities the US Postal Service accepts for ZIP code 87942. Using any city not on this list may result in mail delivery delays.

City	Status
Williamsburg	Acceptable
Williamsburg	Preferred

Nearby ZIP codes

87931 Caballo (13.8 mi) 87939 Monticello (16.2 mi)

Demographics updated 05/2026

Population
Total population	1,542
Population density	11 / sq mi
State FIPS	35
County FIPS	051

Geography
Land area	144.37 sq mi
Water area	0.06 sq mi
Latitude	33.1765
Longitude	-107.3480
Timezone	Mountain (MT)
Area code	575

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	79.9%	62.8%	48.8%
$50k – $100k	17.9%	23.0%	29.4%
$100k – $200k	2.2%	12.5%	17.6%
Over $200k	0.0%	1.7%	4.1%

Demographics & statistics

1,542

Population

People per sq mi

54.8

Median age

$34,967

Median household income

$18,971

Per capita income

$113,600

Median home value

$766

Median monthly rent

86.4%

Home ownership

23.9%

Poverty rate

15.1%

Unemployment

688

Housing units

1.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

152

55–59

60–64

65–74

154

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	175	11.3%
18 and over	1,367	88.7%
65 and over	479	31.1%
Median age	54.8 years

Race & ethnicity

White 56.8%

Hispanic or Latino 21.5%

Two or more races 10.9%

Other race 10.8%

Group	Count	%
White	1,116	56.8%
Hispanic or Latino	422	21.5%
Two or more races	214	10.9%
Other race	212	10.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	79.9%	62.8%	48.8%
$50k – $100k	17.9%	23.0%	29.4%
$100k – $200k	2.2%	12.5%	17.6%
Over $200k	0.0%	1.7%	4.1%

$10k–$15k 3.3%

$15k–$25k 30.3%

$25k–$35k 16.5%

$35k–$50k 7.8%

$50k–$75k 26.0%

$75k–$100k 12.7%

$100k–$150k 3.4%

Range	% of households
$10k–$15k	3.3%
$15k–$25k	30.3%
$25k–$35k	16.5%
$35k–$50k	7.8%
$50k–$75k	26.0%
$75k–$100k	12.7%
$100k–$150k	3.4%
Median income	$34,967

Housing

Home values

Under $50k 13.7%

$50k–$100k 32.4%

$100k–$150k 15.8%

$150k–$200k 15.3%

$200k–$300k 1.9%

$300k–$500k 13.4%

$500k–$1M 7.6%

Housing overview

Metric	Value
Median home value	$113,600
Median rent / month	$766
Owner occupied	86.4%
Renter occupied	13.6%
Vacant	27.8%
Single-family detached	31.1%
Large apartment buildings	0.0%
Mobile homes	63.0%
Median rooms	5.1
Avg household size (owned)	2.76

Year built

Era	%
2020 or later	0.0%
2010–2019	7.3%
2000–2009	6.9%
1990–1999	23.9%
1980–1989	20.3%
1970–1979	14.8%
1960–1969	7.3%
1950–1959	0.9%
1940–1949	1.6%
1939 or earlier	16.9%

Bedrooms

Size	% of units
No bedroom (studio)	1.2%
1 bedroom	28.6%
2 bedrooms	26.0%
3 bedrooms	34.6%
4 bedrooms	2.6%
5+ bedrooms	7.1%

Vehicles per household

Vehicles	% of households
No vehicle	1.8%
1 vehicle	38.8%
2 vehicles	26.0%
3 or more	33.4%

Heating fuel

Fuel type	%
Utility gas	31.8%
Electricity	56.4%
Propane / LP gas	11.8%

Households & families

Household type	Count	%
Married-couple family	290	52.6%
Cohabiting couple	22	4.0%
Male householder, no spouse	117	21.2%
Female householder, no spouse	122	22.1%
Households with children under 18	78	14.2%
Households with seniors (65+)	271	49.2%
Average household size	2.80

Marital status

Status	Male	Female
Never married	20.8%	19.6%
Married	57.3%	51.8%
Separated	1.7%	0.0%
Widowed	6.7%	13.2%
Divorced	13.5%	15.4%

Education

Less than 9th grade 1.7%

Some HS, no diploma 9.9%

HS graduate 45.6%

Some college, no degree 33.3%

Associate's degree 7.7%

Bachelor's degree 1.8%

Graduate / professional 0.0%

Metric	%
HS diploma or higher	88.4%
Bachelor's or higher	1.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	14	18.9%
High school	60	81.1%
College / grad school	0	0.0%

Employment

Industry of employment

Agriculture & mining 26.0%

Education & healthcare 17.4%

Other services 12.8%

Manufacturing 10.5%

Arts, food & hospitality 8.3%

Professional & management 7.6%

Transportation & utilities 5.3%

Retail trade 4.7%

Construction 3.7%

Public administration 3.7%

Occupation

Category	%
Management, business & arts	27.8%
Service	19.3%
Sales & office	15.1%
Natural resources & construction	24.1%
Production & transportation	13.7%

Employment type

Type	%
Private sector	59.2%
Government	14.2%
Self-employed	26.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	50.2%
Carpool	34.0%
Public transit	3.7%
Walk	0.0%
Work from home	12.1%
Other means	0.0%
Avg commute (minutes)	22.7

Poverty

All people 23.9%

Under 18 years 83.4%

18 and over 16.3%

Married-couple families 20.7%

Female-led households 62.5%

Income support

Source	% of households
Social Security	48.5%
Retirement income	24.9%
Supplemental Security	4.5%
Cash public assistance	0.0%
Food stamps / SNAP	4.7%

Health indicators

Condition	%
Obesity	34.5%
High blood pressure	41.3%
High cholesterol	38.4%
Diabetes	16.2%
Heart disease	10.8%
Stroke	5.1%
Asthma	10.3%
Arthritis	34.8%
Kidney disease	4.7%
Pulmonary disease	10.2%
Cancer	9.2%

Behavior / access	%
Smoking	18.4%
Binge drinking	10.8%
No physical activity	25.6%
Less than 7 hrs sleep	31.7%
Depression	19.9%
Fair or poor health	19.3%
Poor mental health	13.3%
Poor physical health	14.2%
No health insurance	10.7%
Visited doctor (checkup)	71.9%
Visited dentist	59.5%
Cholesterol screening	91.2%
Teeth loss	17.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	118	8.6%

Disability	%
Any disability	33.9%
Under 18	0.0%
18–64 years	24.5%
65 and over	63.7%

Health insurance coverage

Type	%
Private insurance	56.9%
Public insurance	61.5%
No insurance	8.4%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,524	98.8%
Spanish	102	6.7%
Other Indo-European	102	6.7%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,303	84.5%
Born in same state	1,286	83.4%
Born in different state	732	47.5%
Foreign born	17	1.1%
Naturalized citizen	239	15.5%
Not a US citizen	70	29.3%

Ancestry

Ancestry	Count	%
French	298	19.3%
Norwegian	60	3.9%

Ancestry	Count	%
Arab	25	1.6%
Italian	7	0.5%

Technology access

Metric	% of households
Computer access	35.7%
Internet access	92.0%

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

Frequently asked questions about ZIP code 87942

What city is ZIP code 87942 in?

ZIP code 87942 is primarily assigned to Williamsburg, New Mexico.

What county is ZIP code 87942 in?

ZIP code 87942 falls within Sierra County, New Mexico.

Does ZIP code 87942 have an older population?

31% of residents in ZIP code 87942 are 65 or older, above the national average of ~17%.

What is the poverty rate in ZIP code 87942?

24% of residents in ZIP code 87942 live below the poverty line, above the national average.

Does ZIP code 87942 have a large retiree population?

49% of households in ZIP code 87942 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 87942 mostly owner-occupied?

86% of occupied units in ZIP code 87942 are owner-occupied, well above the national average.

What timezone is ZIP code 87942 in?

ZIP code 87942 observes the MST timezone.