Oldest ZIP codes in Maricopa County, AZ
These are the 25 ZIP codes in Maricopa County with the highest median age, out of 131 with at least 1,000 residents. 85375 (Sun City West, 74.7), 85351 (Sun City, 72.6) and 85263 (Rio Verde, 68.7) lead the list. There is no single "best" ZIP code in Maricopa County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.
Oldest ZIP codes in Maricopa County
| Rank | ZIP | Mailing city | Median age | Residents | Households | Residential mailboxes |
|---|---|---|---|---|---|---|
| 1 | 85375 | Sun City West | 74.7 ±0.6 | 27,680 | 16,408 | 19,381 |
| 2 | 85351 | Sun City | 72.6 ±0.8 | 27,592 | 17,227 | 20,605 |
| 3 | 85263 | Rio Verde | 68.7 ±1.6 | 3,472 | 1,910 | 3,261 |
| 4 | 85377 | Carefree | 64.8 ±2.3 | 3,437 | 1,714 | — |
| 5 | 85373 | Sun City | 64.5 ±2.0 | 20,254 | 9,308 | 9,680 |
| 6 | 85390 | Wickenburg | 64.5 ±1.7 | 10,298 | 5,165 | 6,286 |
| 7 | 85266 | Scottsdale | 62.7 ±1.9 | 12,516 | 5,546 | 6,443 |
| 8 | 85268 | Fountain Hills | 61.5 ±1.4 | 23,849 | 11,073 | 14,012 |
| 9 | 85262 | Scottsdale | 61.4 ±1.5 | 14,329 | 6,589 | 9,112 |
| 10 | 85321 | Ajo | 58.9 ±4.8 | 3,555 | 1,656 | 1,988 |
| 11 | 85374 | Surprise | 57.7 ±2.4 | 41,420 | 18,489 | 22,095 |
| 12 | 85248 | Chandler | 57.5 ±2.2 | 37,095 | 17,771 | 20,318 |
| 13 | 85258 | Scottsdale | 55.3 ±2.5 | 25,545 | 12,796 | 14,425 |
| 14 | 85215 | Mesa | 53.1 ±2.3 | 16,888 | 7,450 | 9,011 |
| 15 | 85331 | Cave Creek | 52.5 ±1.5 | 31,968 | 13,017 | 13,784 |
| 16 | 85253 | Paradise Valley | 51.9 ±4.0 | 17,904 | 7,654 | 8,001 |
| 17 | 85255 | Scottsdale | 51.5 ±1.2 | 45,346 | 19,829 | 24,702 |
| 18 | 85259 | Scottsdale | 51.5 ±2.1 | 21,670 | 9,540 | 10,309 |
| 19 | 85387 | Surprise | 50.2 ±2.2 | 22,442 | 9,120 | 18,000 |
| 20 | 85250 | Scottsdale | 49.8 ±2.7 | 15,394 | 8,307 | 9,505 |
| 21 | 85028 | Phoenix | 49.6 ±1.6 | 18,752 | 7,972 | 8,748 |
| 22 | 85342 | Morristown | 49.4 ±14.8 | 1,823 | 729 | 683 |
| 23 | 85205 | Mesa | 49.3 ±2.5 | 45,116 | 19,652 | 18,904 |
| 24 | 85087 | New River | 47.8 ±2.0 | 10,157 | 3,743 | 4,349 |
| 25 | 85206 | Mesa | 47.2 ±3.3 | 37,235 | 16,524 | 19,064 |
How we ranked them
Ranked by median age of all residents, highest first (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 131 of 139 qualify.
Which of these to mail, and why
Older ZIP codes respond to health care, hearing and vision, Medicare plans, home safety, estate planning and services that come to the door.
The top five ZIP codes on this list hold 46,567 households. Open any of them on the route map to see each carrier route's own figures before you choose.
Open 85375 on the EDDM route map
More rankings
- Richest ZIP codes in Maricopa County
- ZIP codes with the highest home values in Maricopa County
- ZIP codes with the highest homeownership in Maricopa County
- ZIP codes with the most families with kids in Maricopa County
- ZIP codes with the most new movers in Maricopa County
- Youngest ZIP codes in Maricopa County
- Fastest-growing ZIP codes in Maricopa County
- All Maricopa County ZIP codes
Businesses that mail these ZIP codes
Map it and price it
EDDM guides
Frequently asked questions
- Which ZIP code in Maricopa County has the highest median age?
- 85375 (Sun City West), at 74.7 (±0.6), among 131 ZIP codes with at least 1,000 residents.
- How is this ranking calculated?
- Ranked by median age of all residents, highest first (ACS 5-year estimates, 2020–2024).
- Why are some ZIP codes missing?
- ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.