85131 ZIP Code, Eloy, AZ
85131 is a ZIP code in Eloy, Arizona in Pinal County. It covers 307 square miles of land. The closest ZIP codes are 85123, 85141 and 85145. 18,794 people live here in 4,838 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (75%). Median household income is $56,576, below the Arizona median of $79,964.
Quick facts
- Mailing city: Eloy, AZ
- County: Pinal County
- Land area: 307 sq mi
- Population: 18,794
- Median household income: $56,576
- Carrier routes: 7 (5,565 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 18,794 |
| Households | 4,838 |
| Median household income | $56,576 |
| Income per person | $20,898 |
| Median age | 40.7 |
| Homeowners | 75.4% |
| Median home value | $259,200 |
| Median rent | $981 |
| Bachelor's degree or higher | 12.9% |
| Average commute (minutes) | 28.6 |
| Households with kids under 18 | 29.4% |
| Moved in the past year | 17.8% |
| Below the poverty line | 21.8% |
| Broadband internet | 84.6% |
| Speak a non-English language at home | 34.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 6.4% |
| $10–15K | 4.8% |
| $15–25K | 11.6% |
| $25–35K | 11.8% |
| $35–50K | 10.5% |
| $50–75K | 15.8% |
| $75–100K | 14.7% |
| $100–150K | 16.3% |
| $150–200K | 4.0% |
| $200K+ | 4.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 7.5% |
| 10–19 | 9.1% |
| 20–24 | 6.3% |
| 25–34 | 16.9% |
| 35–44 | 15.2% |
| 45–54 | 13.3% |
| 55–64 | 11.5% |
| 65–74 | 13.4% |
| 75+ | 6.8% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 28.6% |
| Owned outright | 37.6% |
| Rented | 21.2% |
| Vacant | 12.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 67.7% |
| Townhome | 4.0% |
| 2–4 units | 4.3% |
| 5–19 units | 3.6% |
| 20+ units | 3.4% |
| Mobile / other | 17.1% |
Businesses in 85131
119 business establishments with 3,018 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 26
- Accommodation and Food Services: 17
- Manufacturing: 12
- Health Care and Social Assistance: 11
- Other Services (except Public Administration): 11
- Transportation and Warehousing: 10
- Professional, Scientific, and Technical Services: 7
- Administrative and Support and Waste Management and Remediation Services: 7
EDDM carrier routes
85131 has 7 USPS carrier routes with 5,565 residential and 189 business mailboxes. Open the EDDM route map.
Carrier routes in 85131
85131 has 7 USPS carrier routes (2 city (C), 3 rural (R), 2 highway contract (H)) with 5,565 residential and 189 business mailboxes. Routes range from 543 homes (R002) to 1,250 homes (H025); the median route has 713 homes. The Census counted 4,838 households in 85131 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 4 |
| 750–999 | 2 |
| 1,000–1,499 | 1 |
| 1,500+ | 0 |
Best routes in 85131 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C002 — USPS business mailboxes 60, 960 homes
- Route C001 — USPS business mailboxes 42, 863 homes
- Route R001 — USPS business mailboxes 37, 713 homes
- Route R002 — USPS business mailboxes 22, 543 homes
- Route R003 — USPS business mailboxes 18, 603 homes
Select these 5 routes on the route map
Every carrier route in 85131
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 863 | 42 | $23,364 | — | — | — |
| C002 | City | 960 | 60 | $23,364 | — | — | — |
| H025 | Highway contract | 1,250 | 7 | $94,494 | — | — | — |
| H026 | Highway contract | 633 | 3 | $94,494 | — | — | — |
| R001 | Rural | 713 | 37 | $77,435 | — | — | — |
| R002 | Rural | 543 | 22 | $45,898 | — | — | — |
| R003 | Rural | 603 | 18 | $77,435 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 85131 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 85123 — Eloy city, AZ (7.2 mi)
- 85141 — Picacho CDP, AZ (8.3 mi)
- 85145 — Red Rock CDP, AZ (13.3 mi)
- 85194 — Casa Grande city, AZ (17.3 mi)
- 85193 — Casa Grande city, AZ (18.9 mi)
- 85122 — Casa Grande city, AZ (20.7 mi)
- 85653 — Marana town, AZ (20.8 mi)
- 85128 — Coolidge city, AZ (21.7 mi)
Areas that include 85131
- Eloy, AZ ZIP codes — 2 ZIP codes
- Red Rock, AZ ZIP codes — 4 ZIP codes
- Picacho, AZ ZIP codes — 2 ZIP codes
- Pinal County ZIP codes — 32 ZIP codes
- Arizona ZIP code data
Where it ranks
Mail every home in 85131
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 85131, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 85131 in?
- 85131 is a Eloy, AZ mailing address. By land area, 28% lies inside Eloy, 3% lies inside Red Rock and 2% lies inside Coolidge; the rest is outside any Census-defined city or community.
- What county is 85131 in?
- 85131 is in Pinal County.
- What is the population of 85131?
- About 18,794 people (±622), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 16,723.
- What is the median household income in 85131?
- $56,576 (±$9,237), compared with $79,964 for Arizona as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 85131?
- 7 USPS carrier routes with 5,565 residential and 189 business mailboxes (5,762 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 85131?
- The closest, measured center to center: 85123 (7.2 mi, Eloy), 85141 (8.3 mi, Picacho), 85145 (13.3 mi, Red Rock), 85194 (17.3 mi, Casa Grande), 85193 (18.9 mi, Casa Grande) and 85122 (20.7 mi, Casa Grande).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.