St. Johns, Arizona Demographics & Population 2026
During the 2020–2024 ACS period, St. Johns, Arizona had a total population of 631, the 256th largest community in Arizona. The poverty rate is 41.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- More than 1 in 4 residents live below the poverty line (41.0%), well above the national average of 12.4%.
- Only 7.6% of adults have a bachelor's degree, well below the national average of 35.7%.
St. Johns Quick Facts
How St. Johns Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 596 | 631 | +5.9% |
| Median home value | $323,300 | $378,000 | +16.9% |
How St. Johns Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 62 | National average: 61
Education
Educational Attainment (Adults 25+)
St. Johns Rankings in Arizona
Explore Arizona Rankings
Other Cities in Maricopa County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Phoenix | 1,642,323 | $81,332 | 13.7% | $420,700 |
| Mesa | 511,764 | $82,752 | 10.3% | $408,000 |
| Gilbert | 280,262 | $122,551 | 5.3% | $575,100 |
| Chandler | 280,136 | $108,095 | 7.9% | $507,800 |
| Glendale | 252,833 | $73,530 | 15.1% | $387,500 |
| Scottsdale | 243,821 | $110,886 | 7.3% | $789,800 |
| Peoria | 196,906 | $95,815 | 8.4% | $463,600 |
| Tempe | 188,065 | $79,663 | 15.8% | $455,400 |
| Surprise | 154,948 | $96,711 | 8.6% | $435,100 |
| Goodyear | 107,645 | $103,319 | 5.3% | $471,300 |
Cities Similar to St. Johns
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Round Valley | 631 | N/A | $488,300 | 19.9% | 0.0% |
| Wittmann | 631 | N/A | $236,900 | 0.0% | 0.0% |
| Sawmill | 636 | $35,938 | $39,400 | 6.9% | 37.9% |
| Seven Mile | 636 | $55,232 | $108,400 | 0.0% | 75.3% |
| Cane Beds | 637 | $93,125 | $348,900 | 16.1% | 18.8% |
A note before these figures: with a population of 631, St. Johns's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
St. Johns is a small community located in Arizona, within Maricopa County. The total population is 631. It ranks as the 256th most populous out of 441 Census-designated places in Arizona.
Age Demographics
The median age in St. Johns is 35.3 years. This is 9% lower than the state median of 39.0 years. With 29.5% of the population under 18, St. Johns has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The poverty rate stands at 41.0%. This is 229% higher than the state poverty rate of 12.5%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 3.1%. This is 38% lower than the state rate of 5.1%. The median home value is $378,000. Housing costs are 4% lower than the state median of $394,500. 76.6% of occupied housing units are owner-occupied. This homeownership rate is 14% higher than the state average of 67.4%.
Race & Ethnicity
St. Johns is a highly diverse community where no single racial or ethnic group constitutes a majority of the population. The Hispanic or Latino population (0.9%) is well below the state average of 31.4%.
Education
7.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 77% lower than the state rate of 33.3%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.3%.
Data Sources & Methodology
All demographic data for St. Johns, Arizona is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Arizona state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 441 Census-designated places in Arizona. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of St. Johns, Arizona?
St. Johns, Arizona has a population of 631 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in St. Johns, AZ?
The Census Bureau does not publish a reliable median household income estimate for St. Johns — the community is too small for the ACS sample. The national median is $80,734.
What is the poverty rate in St. Johns, AZ?
The poverty rate in St. Johns is 41.0%. This means approximately 259 residents live below the federal poverty line.
What is the racial makeup of St. Johns, Arizona?
St. Johns's population is 0.0% White, 0.0% Black, 0.9% Hispanic/Latino, and 0.0% Asian.
What is the median home value in St. Johns, AZ?
The median home value in St. Johns is $378,000.
How educated is St. Johns, Arizona?
7.6% of adults (25+) in St. Johns hold a bachelor's degree or higher, and 2.2% hold a graduate or professional degree.