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

34145 (Marco Island), at 67.9 (±1.8), among 16 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 Collier County, FL

These are the 16 ZIP codes in Collier County with the highest median age, out of 16 with at least 1,000 residents. 34145 (Marco Island, 67.9), 34108 (Naples, 67.7) and 34102 (Naples, 65.7) lead the list. There is no single "best" ZIP code in Collier 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 Collier County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	34145	Marco Island	67.9 ±1.8	16,205	8,609	16,600
2	34108	Naples	67.7 ±1.2	16,237	8,365	12,307
3	34102	Naples	65.7 ±2.5	11,179	5,501	8,637
4	34110	Naples	65.1 ±2.2	25,630	13,138	17,020
5	34114	Naples	64.8 ±2.1	23,559	10,821	18,719
6	34105	Naples	62.7 ±2.2	15,441	7,889	11,007
7	34112	Naples	62.1 ±1.9	27,193	13,750	19,674
8	34103	Naples	61.6 ±4.0	11,299	5,473	9,474
9	34113	Naples	57.1 ±2.5	26,056	11,520	16,393
10	34109	Naples	54.2 ±2.8	27,273	12,356	15,789
11	34119	Naples	52.4 ±3.3	36,807	15,033	19,367
12	34104	Naples	50.5 ±3.6	26,408	11,763	15,420
13	34120	Naples	44.9 ±2.4	42,345	15,649	22,377
14	34117	Naples	40.4 ±4.1	19,923	5,699	6,378
15	34116	Naples	36.3 ±0.7	35,591	10,254	10,743
16	34142	Immokalee	31.2 ±1.9	35,149	9,072	12,120

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; 16 of 22 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 46,434 households, on 95 carrier routes with 73,283 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 34145 on the EDDM route map

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Frequently asked questions

Which ZIP code in Collier County has the highest median age?: 34145 (Marco Island), at 67.9 (±1.8), among 16 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.