98851 ZIP Code — Soap Lake, WA

Grant County, Washington

ZIP code 98851 is located in Soap Lake, Washington, within Grant County. It covers approximately 146.06 square miles and serves a population of 5,196 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.

About ZIP code 98851

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1950s, giving the area an established character. Median home value is $198,000. Owner-occupancy sits near the national average at 73%.

Median household income is $64,810. SNAP benefit usage at 20% of households reflects economic stress in the area. 44% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is service, with agriculture and mining as the leading industry. The average commute of 22 minutes is near the national average.

College attainment at 15% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 98851 reflects a community defined by a trades-oriented workforce, a significant Social Security-dependent population, and elevated reliance on food assistance.

5,196

population

146.06

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

98851 ZIP code map

Cities in ZIP code 98851

Below are the cities the US Postal Service accepts for ZIP code 98851. Using any city not on this list may result in mail delivery delays.

City	Status
Soap Lake	Acceptable
Soap Lake	Preferred

Nearby ZIP codes

99115 Coulee City (10.1 mi) 98823 Ephrata (12.8 mi) 98832 Marlin (14.2 mi) 98837 Moses Lake (19.2 mi) 98858 Waterville (19.7 mi)

Demographics updated 05/2026

Population
Total population	5,196
Population density	36 / sq mi
State FIPS	53
County FIPS	025

Geography
Land area	146.06 sq mi
Water area	4.40 sq mi
Latitude	47.4212
Longitude	-119.4374
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	53.2%	42.1%	31.7%
$50k – $100k	27.7%	34.5%	30.6%
$100k – $200k	18.2%	19.6%	27.1%
Over $200k	0.9%	3.7%	10.6%

Demographics & statistics

5,196

Population

People per sq mi

35.0

Median age

$64,810

Median household income

$26,125

Per capita income

$198,000

Median home value

$776

Median monthly rent

73.2%

Home ownership

13.9%

Poverty rate

8.2%

Unemployment

1,669

Housing units

14.6%

Bachelor's or higher

Age distribution

Male Female

146

Under 5

140

342

5–9

327

183

10–14

175

239

15–19

229

147

20–24

141

269

25–34

257

440

35–44

420

164

45–54

157

124

55–59

118

102

60–64

337

65–74

323

109

75–84

105

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,596	30.7%
18 and over	3,600	69.3%
65 and over	978	18.8%
Median age	35.0 years

Race & ethnicity

White 63.2%

Hispanic or Latino 14.3%

Other race 13.5%

Two or more races 5.5%

American Indian / Alaska Native 1.9%

Asian 1.6%

Group	Count	%
White	3,834	63.2%
Hispanic or Latino	868	14.3%
Other race	819	13.5%
Two or more races	333	5.5%
American Indian / Alaska Native	113	1.9%
Asian	97	1.6%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.2%	42.1%	31.7%
$50k – $100k	27.7%	34.5%	30.6%
$100k – $200k	18.2%	19.6%	27.1%
Over $200k	0.9%	3.7%	10.6%

Under $10k 4.7%

$10k–$15k 9.6%

$15k–$25k 6.7%

$25k–$35k 9.6%

$35k–$50k 10.3%

$50k–$75k 16.8%

$75k–$100k 11.2%

$100k–$150k 16.8%

$150k–$200k 4.0%

$200k+ 10.3%

Range	% of households
Under $10k	4.7%
$10k–$15k	9.6%
$15k–$25k	6.7%
$25k–$35k	9.6%
$35k–$50k	10.3%
$50k–$75k	16.8%
$75k–$100k	11.2%
$100k–$150k	16.8%
$150k–$200k	4.0%
$200k+	10.3%
Median income	$64,810

Housing

Home values

Under $50k 7.2%

$50k–$100k 14.0%

$100k–$150k 13.3%

$150k–$200k 16.4%

$200k–$300k 25.2%

$300k–$500k 16.4%

$500k–$1M 7.7%

Housing overview

Metric	Value
Median home value	$198,000
Median rent / month	$776
Owner occupied	73.2%
Renter occupied	26.8%
Vacant	21.7%
Single-family detached	59.5%
Large apartment buildings	0.0%
Mobile homes	22.5%
Median rooms	5.3
Avg household size (owned)	2.75

Year built

Era	%
2020 or later	0.5%
2010–2019	5.0%
2000–2009	13.2%
1990–1999	10.0%
1980–1989	13.8%
1970–1979	7.7%
1960–1969	7.0%
1950–1959	27.1%
1940–1949	9.1%
1939 or earlier	6.6%

Bedrooms

Size	% of units
No bedroom (studio)	3.6%
1 bedroom	16.9%
2 bedrooms	27.5%
3 bedrooms	33.9%
4 bedrooms	10.7%
5+ bedrooms	7.4%

Vehicles per household

Vehicles	% of households
No vehicle	6.2%
1 vehicle	22.1%
2 vehicles	38.7%
3 or more	33.0%

Heating fuel

Fuel type	%
Utility gas	0.7%
Electricity	94.8%
Propane / LP gas	0.6%
Fuel oil	1.8%
Wood	1.6%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	819	49.5%
Cohabiting couple	104	6.3%
Male householder, no spouse	447	27.0%
Female householder, no spouse	284	17.2%
Households with children under 18	521	31.5%
Households with seniors (65+)	689	41.7%
Average household size	3.11

Marital status

Status	Male	Female
Never married	41.4%	24.8%
Married	43.8%	48.5%
Separated	0.5%	5.0%
Widowed	2.9%	10.1%
Divorced	11.4%	11.7%

Education

Less than 9th grade 5.1%

Some HS, no diploma 12.0%

HS graduate 35.1%

Some college, no degree 23.0%

Associate's degree 10.3%

Bachelor's degree 9.2%

Graduate / professional 5.4%

Metric	%
HS diploma or higher	83.0%
Bachelor's or higher	14.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	73	4.6%
Kindergarten	111	7.1%
Elementary school	804	51.1%
High school	403	25.6%
College / grad school	181	11.5%

Employment

Industry of employment

Agriculture & mining 19.9%

Education & healthcare 18.7%

Retail trade 12.0%

Transportation & utilities 9.0%

Professional & management 7.9%

Arts, food & hospitality 7.5%

Finance & real estate 5.9%

Other services 5.0%

Construction 4.9%

Public administration 3.8%

Manufacturing 3.2%

Wholesale trade 1.3%

Information 1.0%

Occupation

Category	%
Management, business & arts	18.4%
Service	30.5%
Sales & office	20.3%
Natural resources & construction	18.3%
Production & transportation	12.5%

Employment type

Type	%
Private sector	69.6%
Government	20.5%
Self-employed	9.4%
Unpaid family workers	0.6%

Commute

Method	%
Drive alone	69.0%
Carpool	13.3%
Public transit	1.0%
Walk	1.8%
Work from home	14.0%
Other means	0.9%
Avg commute (minutes)	22.4

Poverty

All people 13.9%

Under 18 years 10.9%

18 and over 15.1%

Married-couple families 8.1%

Female-led households 53.3%

Income support

Source	% of households
Social Security	43.8%
Retirement income	34.8%
Supplemental Security	9.3%
Cash public assistance	4.9%
Food stamps / SNAP	19.8%

Health indicators

Condition	%
Obesity	32.3%
High blood pressure	40.7%
High cholesterol	42.0%
Diabetes	13.5%
Heart disease	9.2%
Stroke	4.6%
Asthma	11.5%
Arthritis	31.1%
Kidney disease	4.1%
Pulmonary disease	9.8%
Cancer	8.7%

Behavior / access	%
Smoking	18.6%
Binge drinking	14.1%
No physical activity	24.3%
Less than 7 hrs sleep	29.3%
Depression	24.2%
Fair or poor health	19.2%
Poor mental health	15.6%
Poor physical health	14.7%
No health insurance	13.5%
Visited doctor (checkup)	72.6%
Visited dentist	62.7%
Cholesterol screening	88.4%
Teeth loss	15.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	256	7.1%

Disability	%
Any disability	15.8%
Under 18	4.7%
18–64 years	17.0%
65 and over	31.2%

Health insurance coverage

Type	%
Private insurance	39.2%
Public insurance	57.4%
No insurance	11.1%
Uninsured under 19	3.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,910	94.5%
Spanish	550	11.2%
Other Indo-European	376	7.7%
Asian & Pacific Islander	174	3.5%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,267	82.1%
Born in same state	4,255	81.9%
Born in different state	2,683	51.6%
Foreign born	12	0.2%
Naturalized citizen	929	17.9%
Not a US citizen	322	34.7%

Ancestry

Ancestry	Count	%
Italian	812	15.6%
Polish	381	7.3%
French	324	6.2%
Arab	58	1.1%

Ancestry	Count	%
German	18	0.3%
English	14	0.3%
Dutch	8	0.2%

Technology access

Metric	% of households
Computer access	31.8%
Internet access	89.3%

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

Frequently asked questions about ZIP code 98851

What city is ZIP code 98851 in?

ZIP code 98851 is primarily assigned to Soap Lake, Washington.

What county is ZIP code 98851 in?

ZIP code 98851 falls within Grant County, Washington.

Is ZIP code 98851 family-oriented?

31% of residents in ZIP code 98851 are under 18, reflecting a younger, family-oriented community.

Does ZIP code 98851 have a large retiree population?

44% of households in ZIP code 98851 receive Social Security income, suggesting a significant retiree or disability population.

How educated is the population of ZIP code 98851?

15% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the population of ZIP code 98851?

ZIP code 98851 has an estimated population of 5,196 residents, with a density of 36 people per square mile.

What timezone is ZIP code 98851 in?

ZIP code 98851 observes the PST timezone.