Saint John, WA · standard
ZIP Code 99171
Whitman County, Washington - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 959
- 1/sq mi
- $53,333
- Median income
- $220,500
- Median home value
- 25.4%
- Bachelor's or higher
The verdict
Saint John pairs one of the lowest household incomes in the country with below-median home values, in a rural, homeowner-dominated area.
- 19th pct
- household income, US ZIPs
- 49th pct
- home value, US ZIPs
- 1
- people per sq mi
- 78%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 99171 against every reporting US ZIP.
ZIP code 99171 is a sparsely populated ZIP (a standard USPS delivery area) in Saint John, Whitman County, Washington, home to just 959 residents across 685.0 square miles, a density of 1 people per square mile, in the Los Angeles time zone.
ZIP 99171 reports a modest median household income of $53,333 (41% below the Washington average), while per-capita income is $32,685. 13.1% of residents live below the poverty line, and the unemployment rate reads 5.3%. Median home value sits at $220,500 (57% below the state average), median rent at $929 a month, and owner-occupancy at 77.5%.
Educational attainment sits below the national norm: 25.4% of adults hold a bachelor's degree or higher, the median age is 55.7, and the average commute is -. Compare these figures to the Washington and national benchmarks above rather than reading 99171's numbers in isolation.
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 →
Top industries in ZIP 99171
Top 5 sectors by establishment count in Saint John, WA
Which industries have the most business establishments in ZIP 99171.
- Wholesale trade
Wholesale trade
10 establishments
- Retail trade 3
Retail trade
3 establishments
- Finance and insurance 3
Finance and insurance
3 establishments
- Other services (except public administration) 3
Other services (except public administration)
3 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
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 99171, Saint John, 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
959
Population
685.0
Area (sq mi)
1
People / sq mi
Los Angeles
Time Zone
standard
ZIP Type
Who lives in ZIP 99171?
55.7
Median Age
44.6%
Male
55.4%
Female
3.5%
Foreign-Born
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?
$53,333
Median Household Income
-41% vs state
$32,685
Per Capita Income
13.1%
Poverty Rate
5.3%
Unemployment Rate
How ZIP 99171 ranks nationally
Saint John, WA household income vs. every US ZIP code
Median household income, the full national distribution, with this ZIP marked
$53,333 19th percentile higher than 19% of 30,318 US ZIPs
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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
452
Total Housing Units
408
Occupied Units
44
Vacant Units
2.08
Avg Household Size
Occupancy Type
$220,500
Median Home Value
-57% vs state
$929
Median Rent
1954
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 28 business establishments in ZIP 99171, employing approximately 114 people with a combined annual payroll of $7,414,000.
28
Businesses
114
Employees
$7.4M
Annual Payroll
4
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Wholesale trade | 10 | 35.7% |
| Retail trade | 3 | 10.7% |
| Finance and insurance | 3 | 10.7% |
| Other services (except public administration) | 3 | 10.7% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
More ZIP Codes in Whitman County
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Frequently Asked Questions
What county is ZIP code 99171 in? ▼
What is the population of ZIP code 99171? ▼
What is the median household income in ZIP 99171? ▼
What is the average home value in ZIP 99171? ▼
What is the demographic makeup of ZIP 99171? ▼
How many businesses are in ZIP code 99171? ▼
What are the main industries in ZIP code 99171? ▼
What is the education level in ZIP code 99171? ▼
What percentage of residents own vs. rent in ZIP 99171? ▼
What is the poverty rate in ZIP code 99171? ▼
Read our methodology to see how this data is sourced, computed, and verified.