PlainZIP

Mica, WA · standard

ZIP Code 99023

Spokane County, Washington - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

529
15/sq mi
$114,298
Median income
$735,300
Median home value
65.2%
Bachelor's or higher

The verdict

Mica pairs an upper-quartile household income with top-decile home values, in a rural, homeowner-dominated area.

Top 12%
household income, US ZIPs
Top 6%
home value, US ZIPs
15
people per sq mi
100%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 99023 against every reporting US ZIP.

ZIP code 99023 is a sparsely populated ZIP (a standard USPS delivery area) in Mica, Spokane County, Washington, home to just 529 residents across 35.3 square miles, a density of 15 people per square mile, in the Los Angeles time zone.

ZIP 99023 skews affluent, with a median household income of $114,298 (26% above the Washington average), while per-capita income is $49,800. The poverty rate stands at 0.0% and the unemployment rate at 0.0%. Housing costs here run $735,300 for a typical home value (44% above the state average), with rent averaging - a month; 100.0% of homes are owner-occupied.

This is a highly-educated ZIP: 65.2% of adults hold a bachelor's degree or higher, the median age is 36, and the average commute is -. A geography-based comparison follows: 9 ZIP codes within about 10 miles of 99023, plus 6 more within Spokane County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 99023, Mica, WA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

529

Population

35.3

Area (sq mi)

15

People / sq mi

Los Angeles

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 99023?

36.0

Median Age

44.4%

Male

55.6%

Female

0.0%

Foreign-Born

White 98.5%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 1.5%
Hispanic or Latino 1.5%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$114,298

Median Household Income

+26% vs state

$49,800

Per Capita Income

0.0%

Poverty Rate

0.0%

Unemployment Rate

How ZIP 99023 ranks nationally

Mica, WA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$114,298 Top 12% higher than 88% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 78.2%
Bachelor's Degree or Higher 65.2%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

285

Total Housing Units

254

Occupied Units

31

Vacant Units

3.15

Avg Household Size

Occupancy Type

Owner 100.0%
Renter 0.0%

$735,300

Median Home Value

+44% vs state

2003

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+14.4%

YoY Change (2024)

308

HPI Index (2000 = 100)

+208%

Total Change Since 2000

Home values in ZIP 99023 have increased 14.4% over the past year (2024). Since 2000, this ZIP has seen +208% cumulative appreciation.

Year Annual Change HPI Index
2019 +6.4% 200
2020 +2.2% 204
2021 +23.7% 252
2022 +6.8% 269
2024 +14.4% 308

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 14 business establishments in ZIP 99023, employing approximately 68 people with a combined annual payroll of $5,692,000.

14

Businesses

68

Employees

$5.7M

Annual Payroll

2

Industry Sectors

Industry Establishments % of Total
Construction 6 42.9%
Professional, scientific, and technical services 3 21.4%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 99023 vs 99016 →

ZIP 99023 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 99023 ranks #0 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 99023 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 99023 ranks #3 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
99016 Greenacres, WA 12,480 4.3 mi
99037 Veradale, WA 12,973 5.3 mi
99030 Rockford, WA 1,032 6.0 mi
99036 Valleyford, WA 1,448 5.4 mi
99206 Spokane, WA 34,802 6.1 mi
99216 Spokane, WA 24,362 8.4 mi
99019 Liberty Lake, WA 9,502 7.2 mi
99027 Otis Orchards, WA 6,101 10.5 mi
99212 Spokane, WA 19,197 9.6 mi

More ZIP Codes in Spokane County

99208 standard
Spokane, WA
Pop: 49,193
99205 standard
Spokane, WA
Pop: 42,137
99206 standard
Spokane, WA
Pop: 34,802
99207 standard
Spokane, WA
Pop: 30,854
99223 standard
Spokane, WA
Pop: 29,273
99216 standard
Spokane, WA
Pop: 24,362

Related Areas

Spokane County Mica, WA Washington

Frequently Asked Questions

What county is ZIP code 99023 in? ▼
ZIP code 99023 (Mica) is located in Spokane County, Washington. Spokane County contains multiple ZIP codes, see the full list at /counties/spokane-wa.
What is the population of ZIP code 99023? ▼
ZIP code 99023 in Mica, WA has a population of 529 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 99023? ▼
The median household income in ZIP 99023 is $114,298, which is 50% above the national average of $76,288.
What is the average home value in ZIP 99023? ▼
The median home value in ZIP 99023 is $735,300, which is 164% above the national average of $278,155.
What is the demographic makeup of ZIP 99023? ▼
The largest racial group in ZIP 99023 is White at 98.5%. Hispanic or Latino residents make up 1.5% of the population.
How many businesses are in ZIP code 99023? ▼
ZIP code 99023 has 14 business establishments employing approximately 68 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
How have home values changed in ZIP code 99023? ▼
According to the FHFA House Price Index, home values in ZIP 99023 increased by 14.4% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 208%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 99023? ▼
In ZIP code 99023, 78.2% of residents aged 25+ have a high school diploma or higher, and 65.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).

Read our methodology to see how this data is sourced, computed, and verified.