Ajo, AZ · standard
ZIP Code 85321
Pima County, Arizona - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 4,435
- 1/sq mi Low-density area
- $53,180
- Median income Below-median income area
- $119,000
- Median home value Below-median home value
- 25.4%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Ajo pairs one of the lowest household incomes in the country with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- 19th pct
- household income, US ZIPs
- 16th pct
- home value, US ZIPs
- 1
- people per sq mi
- 71%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 85321 against every reporting US ZIP.
ZIP code 85321 covers 4031.8 square miles in Ajo, Pima County, Arizona (a standard USPS delivery area), with a modest 4,435 residents on file, a density of 1 people per square mile, in the Phoenix time zone.
ZIP 85321 reports a modest median household income of $53,180 (27% below the average Arizona ZIP), while per-capita income is $29,536. The poverty rate is 17.2%, with unemployment at 8.4%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $119,000 (65% below the average Arizona ZIP), and median rent is $875; owner occupancy is 71.1%.
Educational attainment sits below the national norm: 25.4% of adults hold a bachelor's degree or higher, the median age is 58.9, and the average commute is -. No nearby ZIP peer set is available for this delivery area, so the Arizona and national benchmarks above are the appropriate context for 85321.
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 85321
Top 5 sectors by establishment count in Ajo, AZ
Which industries have the most business establishments in ZIP 85321.
- Retail trade
Retail trade
13 establishments
- Accommodation and food services
Accommodation and food services
9 establishments
- Other services (except public administration)
Other services (except public administration)
7 establishments
- Health care and social assistance
Health care and social assistance
6 establishments
- Information 3
Information
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 85321, Ajo, AZ · 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
4,435
Population
4031.8
Area (sq mi)
1
People / sq mi
Phoenix
Time Zone
standard
ZIP Type
Who lives in ZIP 85321?
58.9
Median Age
49.3%
Male
50.7%
Female
4.5%
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?
$53,180
Median Household Income
-27% vs state ZIP avg
$29,536
Per Capita Income
17.2%
Poverty Rate
8.4%
Unemployment Rate
How ZIP 85321 ranks among Arizona ZIPs
Ajo, AZ household income vs. every Arizona ZIP code
Median household income among 372 reporting Arizona ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$53,180 26th percentile higher than 26% of 372 Arizona ZIPs
Each bar is a $20K-wide band; taller bars hold more Arizona 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?
Housing stock: occupied vs vacant
2,291housing units
2,291
Total Housing Units
1,656
Occupied Units
635
Vacant Units
2.14
Avg Household Size
Occupancy Type
$119,000
Median Home Value
-65% vs state ZIP avg
$875
Median Rent
1961
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
+19.6%
YoY Change (2023)
179
HPI Index (2000 = 100)
+79%
Total Change Since 2000
Home values in ZIP 85321 have increased 19.6% over the past year (2023). Since 2000, this ZIP has seen +79% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2019 | +21.8% | 127 |
| 2020 | -3.1% | 123 |
| 2021 | +19.7% | 148 |
| 2022 | +1.6% | 150 |
| 2023 | +19.6% | 179 |
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 2023. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 52 business establishments in ZIP 85321, employing approximately 406 people with a combined annual payroll of $17,904,000.
52
Businesses
406
Employees
$17.9M
Annual Payroll
7
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Retail trade | 13 | 25.0% |
| Accommodation and food services | 9 | 17.3% |
| Other services (except public administration) | 7 | 13.5% |
| Health care and social assistance | 6 | 11.5% |
| Information | 3 | 5.8% |
| Finance and insurance | 3 | 5.8% |
| Arts, entertainment, and recreation | 3 | 5.8% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 85321, both outside AZ so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (4,435 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Pima County
Related Areas
Frequently Asked Questions
What county is ZIP code 85321 in?
ZIP code 85321 (Ajo) is located in Pima County, Arizona. Pima County contains multiple ZIP codes, see the full list at /counties/pima-az.
What is the population of ZIP code 85321?
ZIP code 85321 in Ajo, AZ has a population of 4,435 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 85321?
The median household income in ZIP 85321 is $53,180, which is 30% below the national average of $76,288.
What is the average home value in ZIP 85321?
The median home value in ZIP 85321 is $119,000, which is 57% below the national average of $278,155.
What is the demographic makeup of ZIP 85321?
The largest racial group in ZIP 85321 is White at 58.1%. Hispanic or Latino residents make up 26.9% of the population.
How many businesses are in ZIP code 85321?
ZIP code 85321 has 52 business establishments employing approximately 406 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 85321?
The top industries by establishment count in ZIP 85321 are: Retail trade (13), Accommodation and food services (9), Other services (except public administration) (7). There are 7 industry sectors represented in total.
How have home values changed in ZIP code 85321?
According to the FHFA House Price Index, home values in ZIP 85321 increased by 19.6% in 2023. Since 2000, home values in this ZIP have appreciated by approximately 79%. 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 85321?
In ZIP code 85321, 48.8% of residents aged 25+ have a high school diploma or higher, and 25.4% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 85321?
In ZIP code 85321, approximately 71.1% of occupied housing units are owner-occupied and 28.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 85321?
The poverty rate in ZIP code 85321 is 17.2% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
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What to do with ZIP 85321's numbers, next.
- See how ZIP 85321 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Ajo, AZ ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.