Medical Lake ZIP Code List — Spokane County, WA

There is one unique ZIP code in Medical Lake, Washington and it is 99022. Area code: 509.

ZIP codes

68.34

sq mi land

1.85

sq mi water

509

area code

Medical Lake, WA ZIP code map

About Medical Lake, WA

Medical Lake is a charming city located in the eastern part of Washington, nestled within Spokane County. It is known for its picturesque landscapes and tranquil environment, making it a pleasant place for residents and visitors alike. With the ZIP code 99022, this small city offers a unique blend of nature and community spirit.

Location & geography

Medical Lake is situated approximately 17 miles southwest of Spokane, the largest city in the region, and is bordered by other small towns such as Airway Heights to the north and Fairchild Air Force Base nearby. The city has a total land area of 68.34 square miles, which includes 1.85 square miles of water, contributing to its scenic beauty. The terrain features rolling hills and lush greenery, along with the serene Medical Lake itself, known for its recreational opportunities.

Community & economy

The community of Medical Lake is characterized by a friendly, small-town atmosphere where residents take pride in their local culture and heritage. It hosts key industries such as healthcare and retail, which significantly contribute to the local economy. Daily life in Medical Lake includes engaging in outdoor activities, community events, and enjoying the peaceful rural lifestyle that defines the area.

Transportation

Transportation in Medical Lake is primarily facilitated by local roads, with the nearby Interstate 90 providing easy access to Spokane and other parts of Washington. The closest major airport is Spokane International Airport, located about 20 miles northeast of Medical Lake, offering various domestic and international flights. Public transit services are limited, making personal vehicles the preferred method of transportation for residents.

History

Medical Lake was officially incorporated in 1888, with its development largely influenced by the establishment of the local mineral springs known for their therapeutic properties. These springs attracted visitors seeking relaxation and healing, contributing to the city's early growth. Over the years, Medical Lake has maintained its focus on health and wellness, bolstered by various healthcare facilities in the area.

Did you know?

One surprising fact about Medical Lake is that it was originally named for its mineral springs, which were believed to have healing qualities. The city's close proximity to Fairchild Air Force Base adds a unique military presence, enhancing its cultural diversity and community support initiatives.

ZIP codes for Medical Lake, WA (1)

ZIP code	City	County	Map
99022	Medical Lake	Spokane	View map

Demographics & statistics

9,012

Population

40.6

Median age

$87,462

Median household income

$33,873

Per capita income

$300,500

Median home value

$738

Median monthly rent

82.3%

Home ownership

6.0%

Poverty rate

5.4%

Unemployment

2,747

Housing units

29.0%

Bachelor's or higher

Age distribution

Male Female

173

Under 5

154

208

5–9

186

276

10–14

246

415

15–19

370

162

20–24

145

816

25–34

726

651

35–44

580

698

45–54

621

297

55–59

265

354

60–64

316

351

65–74

313

320

75–84

285

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,814	20.1%
18 and over	7,198	79.9%
65 and over	1,353	15.0%
Median age	40.6 years

Race & ethnicity

White 81.9%

Hispanic or Latino 6.3%

Other race 3.8%

Two or more races 3.8%

Black or African American 2.2%

Asian 1.3%

American Indian / Alaska Native 0.6%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	7,882	81.9%
Hispanic or Latino	611	6.3%
Other race	366	3.8%
Two or more races	363	3.8%
Black or African American	210	2.2%
Asian	127	1.3%
American Indian / Alaska Native	57	0.6%
Native Hawaiian / Pacific Islander	7	0.1%

Household income

Under $10k 0.4%

$10k–$15k 4.9%

$15k–$25k 2.3%

$25k–$35k 5.9%

$35k–$50k 11.2%

$50k–$75k 17.6%

$75k–$100k 13.6%

$100k–$150k 31.7%

$150k–$200k 10.2%

$200k+ 2.2%

Range	% of households
Under $10k	0.4%
$10k–$15k	4.9%
$15k–$25k	2.3%
$25k–$35k	5.9%
$35k–$50k	11.2%
$50k–$75k	17.6%
$75k–$100k	13.6%
$100k–$150k	31.7%
$150k–$200k	10.2%
$200k+	2.2%
Median income	$87,462

Housing

Home values

Under $50k 3.0%

$50k–$100k 0.3%

$100k–$150k 0.8%

$150k–$200k 9.1%

$200k–$300k 36.6%

$300k–$500k 36.9%

$500k–$1M 11.8%

$1M+ 1.4%

Housing overview

Metric	Value
Median home value	$300,500
Median rent / month	$738
Owner occupied	82.3%
Renter occupied	17.7%
Vacant	3.4%
Single-family detached	73.0%
Large apartment buildings	7.5%
Mobile homes	11.2%
Median rooms	6.1
Avg household size (owned)	2.70

Year built

Era	%
2020 or later	0.2%
2010–2019	5.4%
2000–2009	21.9%
1990–1999	22.3%
1980–1989	5.9%
1970–1979	24.4%
1960–1969	5.6%
1950–1959	6.9%
1940–1949	1.7%
1939 or earlier	5.7%

Bedrooms

Size	% of units
No bedroom (studio)	0.2%
1 bedroom	6.9%
2 bedrooms	21.5%
3 bedrooms	46.1%
4 bedrooms	16.4%
5+ bedrooms	8.8%

Vehicles per household

Vehicles	% of households
No vehicle	5.8%
1 vehicle	22.6%
2 vehicles	32.2%
3 or more	39.4%

Heating fuel

Fuel type	%
Utility gas	41.9%
Electricity	49.9%
Propane / LP gas	4.0%
Fuel oil	1.7%
Wood	2.6%

Households & families

Household type	Count	%
Married-couple family	1,969	61.5%
Cohabiting couple	157	4.9%
Male householder, no spouse	382	11.9%
Female householder, no spouse	693	21.6%
Households with children under 18	1,079	33.7%
Households with seniors (65+)	816	25.5%
Average household size	2.64

Marital status

Status	Male	Female
Never married	34.5%	25.3%
Married	52.6%	54.2%
Separated	0.8%	3.1%
Widowed	1.1%	3.5%
Divorced	11.0%	13.9%

Education

Less than 9th grade 2.6%

Some HS, no diploma 2.5%

HS graduate 28.8%

Some college, no degree 23.5%

Associate's degree 13.6%

Bachelor's degree 22.5%

Graduate / professional 6.5%

Metric	%
HS diploma or higher	94.9%
Bachelor's or higher	29.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	64	3.6%
Kindergarten	71	4.0%
Elementary school	797	44.5%
High school	549	30.7%
College / grad school	309	17.3%

Employment

Industry of employment

Education & healthcare 29.0%

Retail trade 9.1%

Transportation & utilities 8.3%

Public administration 7.9%

Finance & real estate 7.3%

Professional & management 7.3%

Wholesale trade 6.3%

Arts, food & hospitality 5.9%

Information 5.7%

Other services 5.4%

Manufacturing 5.0%

Construction 2.4%

Agriculture & mining 0.5%

Occupation

Category	%
Management, business & arts	41.9%
Service	17.2%
Sales & office	15.0%
Natural resources & construction	4.2%
Production & transportation	21.7%

Employment type

Type	%
Private sector	68.1%
Government	30.3%
Self-employed	1.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.2%
Carpool	5.8%
Public transit	3.9%
Walk	1.3%
Other means	0.7%
Avg commute (minutes)	23.2

Poverty

All people 6.0%

Under 18 years 3.3%

18 and over 6.7%

Married-couple families 0.0%

Female-led households 24.0%

Income support

Source	% of households
Social Security	34.5%
Retirement income	27.6%
Supplemental Security	7.0%
Cash public assistance	2.1%
Food stamps / SNAP	10.4%

Health indicators

Condition	%
High blood pressure	29.8%
High cholesterol	31.7%
Heart disease	6.0%
Stroke	2.9%
Asthma	11.4%
Arthritis	27.2%
Kidney disease	2.8%
Pulmonary disease	6.8%
Cancer	6.4%

Behavior / access	%
Binge drinking	17.0%
No physical activity	19.3%
Less than 7 hrs sleep	32.2%
Fair or poor health	14.3%
Poor mental health	16.1%
Poor physical health	11.3%
No health insurance	9.6%
Visited doctor (checkup)	70.1%
Visited dentist	66.5%
Cholesterol screening	87.5%
Teeth loss	11.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,209	17.1%

Disability	%
Any disability	19.4%
Under 18	8.3%
18–64 years	18.0%
65 and over	41.5%

Health insurance coverage

Type	%
Private insurance	70.2%
Public insurance	43.2%
Uninsured under 19	2.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	8,685	96.4%
Spanish	252	2.9%
Other Indo-European	43	0.5%
Asian & Pacific Islander	147	1.7%
Other languages	62	0.7%

Place of birth & citizenship

Origin	Count	%
Native born (US)	8,452	93.8%
Born in same state	8,343	92.6%
Born in different state	4,367	48.5%
Foreign born	109	1.2%
Naturalized citizen	560	6.2%
Not a US citizen	440	78.6%

Ancestry

Ancestry	Count	%
Italian	1,050	11.7%
Arab	886	9.8%
French	761	8.4%
English	272	3%

Ancestry	Count	%
Polish	199	2.2%
Dutch	33	0.4%
Norwegian	14	0.2%
German	12	0.1%

Technology access

Metric	% of households
Computer access	35.5%
Internet access	97.5%

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

Frequently asked questions

What is the ZIP code for Medical Lake, WA?

Medical Lake, WA has one ZIP code: 99022.

What is the main ZIP code for Medical Lake, WA?

The primary ZIP code for Medical Lake, WA is 99022. The city uses area code 509 for phone service.

What county is Medical Lake, WA in?

Medical Lake is located in Spokane County, Washington.

How many ZIP codes are in Medical Lake, WA?

Medical Lake, WA has 1 ZIP code.

What ZIP code covers downtown Medical Lake and the Medical Lake city center?

Downtown Medical Lake and the city center are located in ZIP code 99022, which serves as the primary postal code for the entire city of Medical Lake, Washington.

What is the ZIP code for the Medical Lake area near the historic Medical Lake (the lake itself)?

The Medical Lake shoreline and surrounding residential areas near the city's namesake lake are all served by ZIP code 99022, which covers the whole of Medical Lake in Spokane County.