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

80230 (Denver), at 45.7 (±3.9), among 30 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 Denver County, CO

These are the 25 ZIP codes in Denver County with the highest median age, out of 30 with at least 1,000 residents. 80230 (Denver, 45.7), 80123 (Littleton, 41.8) and 80227 (Denver, 40.6) lead the list. There is no single "best" ZIP code in Denver 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 Denver County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	80230	Denver	45.7 ±3.9	10,449	5,455	5,051
2	80123	Littleton	41.8 ±1.3	44,549	19,270	19,726
3	80227	Denver	40.6 ±1.5	34,907	15,589	16,062
4	80207	Denver	38.5 ±2.0	21,542	8,799	8,777
5	80212	Denver	38.1 ±1.5	20,746	10,212	10,066
6	80209	Denver	38.0 ±1.0	27,564	15,251	15,707
7	80222	Denver	37.9 ±2.0	23,838	11,458	11,987
8	80220	Denver	37.7 ±1.2	37,203	16,930	17,334
9	80224	Denver	37.7 ±1.4	19,352	8,683	8,965
10	80206	Denver	37.2 ±1.2	24,383	14,064	14,798
11	80218	Denver	36.7 ±1.3	19,149	12,534	13,242
12	80236	Denver	36.6 ±2.0	16,863	6,185	6,446
13	80235	Denver	36.6 ±2.7	8,373	4,033	4,288
14	80238	Denver	36.0 ±1.8	30,575	11,625	14,485
15	80210	Denver	35.7 ±1.0	39,113	17,713	18,801
16	80237	Denver	35.3 ±2.1	23,384	12,007	13,063
17	80221	Denver	34.9 ±1.2	39,718	15,084	15,643
18	80247	Denver	34.9 ±1.8	29,760	14,919	15,575
19	80219	Denver	34.7 ±1.1	59,523	21,322	20,642
20	80223	Denver	34.6 ±2.0	19,246	8,907	10,542
21	80211	Denver	34.0 ±0.7	38,177	20,551	22,072
22	80202	Denver	34.0 ±2.1	18,589	12,279	15,645
23	80231	Denver	33.3 ±1.2	35,883	16,395	17,774
24	80203	Denver	33.2 ±0.7	22,441	15,936	18,391
25	80205	Denver	33.1 ±0.8	34,571	18,122	21,542

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; 30 of 35 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 59,325 households, on 94 carrier routes with 59,682 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 80230 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 Denver County has the highest median age?: 80230 (Denver), at 45.7 (±3.9), among 30 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.