Which ZIP code in Imperial County has the highest median age?

92004 (Borrego Springs), at 61.9 (±6.2), among 14 ZIP codes with at least 1,000 residents.

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.

Oldest ZIP codes in Imperial County, CA

These are the 14 ZIP codes in Imperial County with the highest median age, out of 14 with at least 1,000 residents. 92004 (Borrego Springs, 61.9), 92257 (Niland, 53.2) and 92275 (Salton City, 42.9) lead the list. There is no single "best" ZIP code in Imperial 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 Imperial County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	92004	Borrego Springs	61.9 ±6.2	3,007	1,654	224
2	92257	Niland	53.2 ±8.0	2,158	780	194
3	92275	Salton City	42.9 ±12.0	1,219	478	—
4	92250	Holtville	37.4 ±3.4	7,830	2,160	2,584
5	92233	Calipatria	35.9 ±2.1	6,836	1,282	158
6	92273	Seeley	35.5 ±4.3	1,090	350	—
7	92274	Thermal	35.0 ±2.1	18,167	5,734	4,848
8	92231	Calexico	34.6 ±1.4	38,621	10,081	10,744
9	92283	Winterhaven	33.6 ±12.7	1,732	627	417
10	92251	Imperial	33.5 ±1.9	27,454	6,760	8,248
11	92249	Heber	32.0 ±2.0	7,312	1,815	1,584
12	92243	El Centro	31.1 ±1.3	49,069	14,260	16,601
13	92227	Brawley	30.8 ±1.5	28,315	8,209	9,315
14	92281	Westmorland	27.9 ±5.5	2,082	561	—

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; 14 of 17 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 6,354 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 92004 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

Map it and price it

EDDM guides

Frequently asked questions

Which ZIP code in Imperial County has the highest median age?: 92004 (Borrego Springs), at 61.9 (±6.2), among 14 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.