What city is ZIP code 99143?

ZIP code 99143 is in LaCrosse, WA (Whitman County).

What county is ZIP code 99143 in?

ZIP code 99143 is mostly in Whitman County, Washington.

How many people live in ZIP code 99143?

About 585 people live in the 99143 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 99143

LaCrosse, WA, Whitman County

Population

585

Land area

331.3sq mi

People per sq mi

City

LaCrosse

ZIP 99143 and nearby ZIP codes

Full map

ZIP 99143 at a glance

ZIP 99143 (LaCrosse) is 98% less dense than Washington as a whole.
The median household income is $38,214, 61% below the Washington median of $98,141.
A typical owner-occupied home is valued at $123,600 (78% below Washington) and median rent is $658 a month.

Local data for ZIP 99143

Counts from official public data

Housing and community stats

ZIP 99143, American Community Survey 2020-2024

Full profile

Median household income

$38,214

Poverty rate

12.4%

Median home value

$123,600

Median rent

$658/mo

Homeownership

84.8%

Bachelor's or higher

35.3%

Median age

59.0

Average commute

24.4 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

$1.6M annual payroll

PPP loans

$704K

28 loans

Campaign donations

$9,221

4% D, 57% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 99143, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Very Low

Top: landslide

Storm events since 1996

339

Countywide, mostly heavy snow

Flood insurance policies

0.3% of homes, county

July high / Jan low

90° / 26°F

15.1 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 99143, CDC PLACES estimates

All 40 measures

Obesity

30.4%

U.S. 33.3% -2.9 pts

Diabetes

11.5%

U.S. 12.1% -0.6 pts

Smoking

10.2%

U.S. 12.8% -2.6 pts

Uninsured (18-64)

5.6%

U.S. 11.1% -5.5 pts

Frequently asked questions

What city is ZIP code 99143?: ZIP code 99143 is in LaCrosse, WA (Whitman County).
What county is ZIP code 99143 in?: ZIP code 99143 is mostly in Whitman County, Washington.
How many people live in ZIP code 99143?: About 585 people live in the 99143 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.