98850 ZIP Code — Rock Island, WA

Douglas County, Washington

ZIP code 98850 is located in Rock Island, Washington, within Douglas County. It covers approximately 76.25 square miles and serves a population of 1,749 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.

About ZIP code 98850

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $252,500. Owner-occupancy is high at 81%, well above the national average.

Median household income is $61,389. SNAP benefit usage at 19% of households reflects economic stress in the area. 39% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is natural resources, construction, and trades, with agriculture and mining as the leading industry. The average commute of 26 minutes is near the national average.

College attainment at 6% is below the national average, consistent with a trades and production-oriented local economy.

19% of residents lack health insurance, above the national average.

Notable community characteristics include disability rates above the national average at 24%.

Overall, ZIP code 98850 reflects a community defined by a trades-oriented workforce, high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.

1,749

population

76.25

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

98850 ZIP code map

Cities in ZIP code 98850

Below are the cities the US Postal Service accepts for ZIP code 98850. Using any city not on this list may result in mail delivery delays.

City	Status
Rock Island	Preferred

Nearby ZIP codes

98828 Malaga (7.9 mi) 98845 Palisades (8.5 mi) 98802 East Wenatchee (11.9 mi) 98801 Wenatchee (15.3 mi) 98848 Quincy (15.3 mi)

Demographics updated 05/2026

Population
Total population	1,749
Population density	23 / sq mi
State FIPS	53
County FIPS	017

Geography
Land area	76.25 sq mi
Water area	2.90 sq mi
Latitude	47.3595
Longitude	-120.0346
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	44.3%	34.8%	31.7%
$50k – $100k	46.8%	37.2%	30.6%
$100k – $200k	8.9%	21.6%	27.1%
Over $200k	0.0%	6.3%	10.6%

Demographics & statistics

1,749

Population

People per sq mi

31.3

Median age

$61,389

Median household income

$21,559

Per capita income

$252,500

Median home value

$863

Median monthly rent

80.6%

Home ownership

8.6%

Poverty rate

5.5%

Unemployment

500

Housing units

5.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

104

5–9

10–14

15–19

20–24

120

25–34

153

35–44

116

45–54

119

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	506	28.9%
18 and over	1,243	71.1%
65 and over	224	12.8%
Median age	31.3 years

Race & ethnicity

White 41.5%

Hispanic or Latino 28%

Other race 25.2%

Two or more races 4.2%

Black or African American 1%

American Indian / Alaska Native 0.1%

Group	Count	%
White	1,007	41.5%
Hispanic or Latino	680	28%
Other race	611	25.2%
Two or more races	103	4.2%
Black or African American	25	1%
American Indian / Alaska Native	3	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	44.3%	34.8%	31.7%
$50k – $100k	46.8%	37.2%	30.6%
$100k – $200k	8.9%	21.6%	27.1%
Over $200k	0.0%	6.3%	10.6%

Under $10k 1.4%

$10k–$15k 1.6%

$15k–$25k 8.5%

$25k–$35k 11.9%

$35k–$50k 17.8%

$50k–$75k 18.3%

$75k–$100k 30.4%

$100k–$150k 8.5%

$150k–$200k 1.2%

$200k+ 0.3%

Range	% of households
Under $10k	1.4%
$10k–$15k	1.6%
$15k–$25k	8.5%
$25k–$35k	11.9%
$35k–$50k	17.8%
$50k–$75k	18.3%
$75k–$100k	30.4%
$100k–$150k	8.5%
$150k–$200k	1.2%
$200k+	0.3%
Median income	$61,389

Housing

Home values

Under $50k 6.9%

$50k–$100k 10.1%

$100k–$150k 6.0%

$150k–$200k 8.6%

$200k–$300k 26.6%

$300k–$500k 22.1%

$500k–$1M 19.7%

Housing overview

Metric	Value
Median home value	$252,500
Median rent / month	$863
Owner occupied	80.6%
Renter occupied	19.4%
Vacant	5.6%
Single-family detached	56.0%
Large apartment buildings	0.0%
Mobile homes	38.1%
Median rooms	5.1
Avg household size (owned)	2.92

Year built

Era	%
2020 or later	0.0%
2010–2019	9.6%
2000–2009	4.9%
1990–1999	15.8%
1980–1989	16.0%
1970–1979	24.7%
1960–1969	12.7%
1950–1959	11.8%
1940–1949	1.1%
1939 or earlier	3.3%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	4.7%
2 bedrooms	21.4%
3 bedrooms	65.2%
4 bedrooms	6.4%
5+ bedrooms	0.5%

Vehicles per household

Vehicles	% of households
No vehicle	1.7%
1 vehicle	17.1%
2 vehicles	40.0%
3 or more	41.2%

Heating fuel

Fuel type	%
Utility gas	3.1%
Electricity	96.5%
Wood	0.3%

Households & families

Household type	Count	%
Married-couple family	330	57.1%
Cohabiting couple	48	8.3%
Male householder, no spouse	68	11.8%
Female householder, no spouse	132	22.8%
Households with children under 18	290	50.2%
Households with seniors (65+)	184	31.8%
Average household size	3.01

Marital status

Status	Male	Female
Never married	34.7%	28.4%
Married	50.4%	48.7%
Separated	0.7%	5.6%
Widowed	1.5%	8.1%
Divorced	12.7%	9.2%

Education

Less than 9th grade 21.4%

Some HS, no diploma 12.8%

HS graduate 27.2%

Some college, no degree 22.7%

Associate's degree 10.0%

Bachelor's degree 3.4%

Graduate / professional 2.4%

Metric	%
HS diploma or higher	65.8%
Bachelor's or higher	5.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	61	14.2%
Kindergarten	11	2.6%
Elementary school	178	41.5%
High school	148	34.5%
College / grad school	31	7.2%

Employment

Industry of employment

Agriculture & mining 21.7%

Education & healthcare 16.6%

Professional & management 12.4%

Transportation & utilities 12.0%

Manufacturing 7.6%

Other services 7.3%

Construction 6.0%

Arts, food & hospitality 5.5%

Retail trade 4.8%

Wholesale trade 2.7%

Public administration 2.7%

Finance & real estate 0.6%

Occupation

Category	%
Management, business & arts	13.0%
Service	23.1%
Sales & office	14.6%
Natural resources & construction	27.6%
Production & transportation	21.7%

Employment type

Type	%
Private sector	82.1%
Government	10.9%
Self-employed	7.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	84.9%
Carpool	3.6%
Public transit	0.0%
Walk	6.5%
Work from home	3.3%
Other means	1.6%
Avg commute (minutes)	25.8

Poverty

All people 8.6%

Under 18 years 8.7%

18 and over 8.6%

Married-couple families 4.2%

Female-led households 22.1%

Income support

Source	% of households
Social Security	39.1%
Retirement income	13.8%
Supplemental Security	9.2%
Cash public assistance	3.6%
Food stamps / SNAP	18.9%

Health indicators

Condition	%
Obesity	33.3%
High blood pressure	30.9%
High cholesterol	32.1%
Diabetes	10.1%
Heart disease	6.5%
Stroke	3.1%
Asthma	10.2%
Arthritis	24.7%
Kidney disease	3.0%
Pulmonary disease	6.6%
Cancer	6.5%

Behavior / access	%
Smoking	15.4%
Binge drinking	16.0%
No physical activity	22.3%
Less than 7 hrs sleep	30.4%
Depression	25.0%
Fair or poor health	16.2%
Poor mental health	14.8%
Poor physical health	11.5%
No health insurance	18.1%
Visited doctor (checkup)	68.8%
Visited dentist	60.9%
Cholesterol screening	86.5%
Teeth loss	14.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	68	5.5%

Disability	%
Any disability	24.1%
Under 18	8.1%
18–64 years	21.6%
65 and over	71.4%

Health insurance coverage

Type	%
Private insurance	44.3%
Public insurance	46.4%
No insurance	18.9%
Uninsured under 19	3.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,563	89.4%
Spanish	289	18.5%
Other Indo-European	287	18.4%
Asian & Pacific Islander	2	0.1%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,384	79.1%
Born in same state	1,364	78.0%
Born in different state	1,035	59.2%
Foreign born	20	1.1%
Naturalized citizen	365	20.9%
Not a US citizen	94	25.8%

Ancestry

Ancestry	Count	%
Italian	96	5.5%
French	94	5.4%
Arab	72	4.1%
Polish	57	3.3%

Ancestry	Count	%
Dutch	29	1.7%
German	17	1%
English	5	0.3%

Technology access

Metric	% of households
Computer access	33.0%
Internet access	88.9%

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

Frequently asked questions about ZIP code 98850

What city is ZIP code 98850 in?

ZIP code 98850 is primarily assigned to Rock Island, Washington.

What county is ZIP code 98850 in?

ZIP code 98850 falls within Douglas County, Washington.

How educated is the population of ZIP code 98850?

6% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 98850 mostly owner-occupied?

81% of occupied units in ZIP code 98850 are owner-occupied, well above the national average.

Does ZIP code 98850 have a large retiree population?

39% of households in ZIP code 98850 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 98850?

ZIP code 98850 has an estimated population of 1,749 residents, with a density of 23 people per square mile.

What timezone is ZIP code 98850 in?

ZIP code 98850 observes the PST timezone.