99143 ZIP Code — Lacrosse, WA

Whitman County, Washington

ZIP code 99143 is located in Lacrosse, Washington, within Whitman County. It covers approximately 331.33 square miles and serves a population of 691 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.

About ZIP code 99143

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $121,100. Owner-occupancy is high at 85%, well above the national average.

Median household income is $37,083. SNAP benefit usage at 21% of households reflects economic stress in the area. 50% 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 25 minutes is near the national average.

Educational attainment is near the national average, with 35% of residents holding a bachelor's degree or higher.

Notable community characteristics include disability rates above the national average at 29%.

Overall, ZIP code 99143 reflects a community defined by high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.

691

population

331.33

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

99143 ZIP code map

Cities in ZIP code 99143

Below are the cities the US Postal Service accepts for ZIP code 99143. Using any city not on this list may result in mail delivery delays.

City	Status
Lacrosse	Preferred

Nearby ZIP codes

99125 Endicott (17.2 mi)

Demographics updated 05/2026

Population
Total population	691
Population density	2 / sq mi
State FIPS	53
County FIPS	075

Geography
Land area	331.33 sq mi
Water area	3.50 sq mi
Latitude	46.6940
Longitude	-117.8436
Timezone	Pacific (PT)
Area code	509

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	61.6%	55.9%	31.7%
$50k – $100k	27.0%	24.5%	30.6%
$100k – $200k	10.8%	15.6%	27.1%
Over $200k	0.6%	4.0%	10.6%

Demographics & statistics

691

Population

People per sq mi

55.1

Median age

$37,083

Median household income

$30,301

Per capita income

$121,100

Median home value

$670

Median monthly rent

84.9%

Home ownership

12.9%

Poverty rate

0.0%

Unemployment

363

Housing units

35.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	119	17.2%
18 and over	572	82.8%
65 and over	186	26.9%
Median age	55.1 years

Race & ethnicity

White 64.5%

Hispanic or Latino 14.8%

Other race 13.8%

Two or more races 4.6%

American Indian / Alaska Native 1.4%

Black or African American 1%

Group	Count	%
White	523	64.5%
Hispanic or Latino	120	14.8%
Other race	112	13.8%
Two or more races	37	4.6%
American Indian / Alaska Native	11	1.4%
Black or African American	8	1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	61.6%	55.9%	31.7%
$50k – $100k	27.0%	24.5%	30.6%
$100k – $200k	10.8%	15.6%	27.1%
Over $200k	0.6%	4.0%	10.6%

Under $10k 4.7%

$10k–$15k 6.1%

$15k–$25k 12.2%

$25k–$35k 25.6%

$35k–$50k 10.5%

$50k–$75k 11.9%

$75k–$100k 12.2%

$100k–$150k 9.0%

$150k–$200k 6.7%

$200k+ 1.2%

Range	% of households
Under $10k	4.7%
$10k–$15k	6.1%
$15k–$25k	12.2%
$25k–$35k	25.6%
$35k–$50k	10.5%
$50k–$75k	11.9%
$75k–$100k	12.2%
$100k–$150k	9.0%
$150k–$200k	6.7%
$200k+	1.2%
Median income	$37,083

Housing

Home values

Under $50k 4.8%

$50k–$100k 25.0%

$100k–$150k 32.2%

$150k–$200k 5.5%

$200k–$300k 9.2%

$300k–$500k 18.5%

$500k–$1M 4.5%

$1M+ 0.3%

Housing overview

Metric	Value
Median home value	$121,100
Median rent / month	$670
Owner occupied	84.9%
Renter occupied	15.1%
Vacant	17.1%
Single-family detached	81.7%
Large apartment buildings	0.0%
Mobile homes	11.3%
Median rooms	6.7
Avg household size (owned)	2.02

Year built

Era	%
2020 or later	0.0%
2010–2019	1.9%
2000–2009	1.7%
1990–1999	4.8%
1980–1989	8.9%
1970–1979	14.2%
1960–1969	3.9%
1950–1959	16.6%
1940–1949	11.6%
1939 or earlier	36.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	3.4%
2 bedrooms	17.8%
3 bedrooms	48.4%
4 bedrooms	22.7%
5+ bedrooms	7.7%

Vehicles per household

Vehicles	% of households
No vehicle	4.4%
1 vehicle	14.5%
2 vehicles	36.6%
3 or more	44.5%

Heating fuel

Fuel type	%
Utility gas	36.9%
Electricity	34.3%
Propane / LP gas	2.0%
Fuel oil	11.6%
Wood	12.2%
No fuel used	2.0%

Households & families

Household type	Count	%
Married-couple family	178	51.7%
Cohabiting couple	39	11.3%
Male householder, no spouse	68	19.8%
Female householder, no spouse	59	17.2%
Households with children under 18	124	36.0%
Households with seniors (65+)	152	44.2%
Average household size	2.01

Marital status

Status	Male	Female
Never married	19.3%	15.5%
Married	56.7%	53.8%
Separated	0.0%	0.8%
Widowed	2.5%	6.0%
Divorced	21.5%	23.9%

Education

Less than 9th grade 3.0%

Some HS, no diploma 5.7%

HS graduate 19.8%

Some college, no degree 25.0%

Associate's degree 11.1%

Bachelor's degree 31.9%

Graduate / professional 3.5%

Metric	%
HS diploma or higher	91.3%
Bachelor's or higher	35.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	9	8.9%
Kindergarten	1	1.0%
Elementary school	64	63.4%
High school	10	9.9%
College / grad school	17	16.8%

Employment

Industry of employment

Agriculture & mining 34.8%

Education & healthcare 19.4%

Construction 11.5%

Public administration 8.5%

Professional & management 6.7%

Retail trade 5.2%

Wholesale trade 4.2%

Manufacturing 3.9%

Information 1.8%

Other services 1.8%

Transportation & utilities 1.2%

Arts, food & hospitality 0.6%

Finance & real estate 0.3%

Occupation

Category	%
Management, business & arts	47.3%
Service	17.9%
Sales & office	7.9%
Natural resources & construction	14.5%
Production & transportation	12.4%

Employment type

Type	%
Private sector	52.4%
Government	16.4%
Self-employed	30.6%
Unpaid family workers	0.6%

Commute

Method	%
Drive alone	64.1%
Carpool	18.1%
Public transit	0.0%
Walk	5.5%
Work from home	12.3%
Other means	0.0%
Avg commute (minutes)	24.9

Poverty

All people 12.9%

Under 18 years 11.8%

18 and over 13.1%

Married-couple families 2.2%

Female-led households 25.0%

Income support

Source	% of households
Social Security	50.0%
Retirement income	11.6%
Supplemental Security	6.7%
Cash public assistance	5.2%
Food stamps / SNAP	21.2%

Health indicators

Condition	%
Obesity	30.9%
High blood pressure	35.9%
High cholesterol	36.7%
Diabetes	10.1%
Heart disease	8.2%
Stroke	3.7%
Asthma	10.4%
Arthritis	29.7%
Kidney disease	3.6%
Pulmonary disease	7.4%
Cancer	9.4%

Behavior / access	%
Smoking	13.6%
Binge drinking	15.5%
No physical activity	18.8%
Less than 7 hrs sleep	26.5%
Depression	24.7%
Fair or poor health	13.9%
Poor mental health	13.3%
Poor physical health	11.2%
No health insurance	8.9%
Visited doctor (checkup)	73.0%
Visited dentist	72.1%
Cholesterol screening	91.3%
Teeth loss	10.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	42	7.3%

Disability	%
Any disability	29.2%
Under 18	0.0%
18–64 years	25.9%
65 and over	54.8%

Health insurance coverage

Type	%
Private insurance	60.9%
Public insurance	53.5%
No insurance	5.4%
Uninsured under 19	5.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	646	93.5%
Spanish	7	1.1%
Other Indo-European	0	0.0%
Asian & Pacific Islander	6	0.9%
Other languages	1	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	663	95.9%
Born in same state	654	94.6%
Born in different state	464	67.1%
Foreign born	9	1.3%
Naturalized citizen	28	4.1%
Not a US citizen	6	21.4%

Ancestry

Ancestry	Count	%
Arab	166	24%
French	67	9.7%
Italian	50	7.2%
Polish	26	3.8%

Ancestry	Count	%
English	6	0.9%
German	4	0.6%
Norwegian	1	0.1%

Technology access

Metric	% of households
Computer access	49.8%
Internet access	94.8%

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

Frequently asked questions about ZIP code 99143

What city is ZIP code 99143 in?

ZIP code 99143 is primarily assigned to Lacrosse, Washington.

What county is ZIP code 99143 in?

ZIP code 99143 falls within Whitman County, Washington.

Does ZIP code 99143 have an older population?

27% of residents in ZIP code 99143 are 65 or older, above the national average of ~17%.

Does ZIP code 99143 have a large retiree population?

50% of households in ZIP code 99143 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 99143 mostly owner-occupied?

85% of occupied units in ZIP code 99143 are owner-occupied, well above the national average.

What is the typical home value in ZIP code 99143?

The median home value in ZIP code 99143 is $121,100.

What timezone is ZIP code 99143 in?

ZIP code 99143 observes the PST timezone.