Which ZIP code in St. Lucie County has the highest median age?

34949 (Fort Pierce), at 64.8 (±2.1), among 15 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 St. Lucie County, FL

These are the 15 ZIP codes in St. Lucie County with the highest median age, out of 15 with at least 1,000 residents. 34949 (Fort Pierce, 64.8), 34987 (Port Saint Lucie, 58.1) and 34951 (Fort Pierce, 57.3) lead the list. There is no single "best" ZIP code in St. Lucie 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 St. Lucie County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	34949	Fort Pierce	64.8 ±2.1	7,470	4,146	6,806
2	34987	Port Saint Lucie	58.1 ±3.2	21,727	9,616	15,555
3	34951	Fort Pierce	57.3 ±3.2	17,148	7,419	8,784
4	34986	Port Saint Lucie	57.1 ±4.9	30,715	12,779	15,653
5	34957	Jensen Beach	57.0 ±2.7	23,462	11,200	15,814
6	34952	Port Saint Lucie	51.0 ±1.8	42,655	18,375	21,903
7	34984	Port Saint Lucie	44.0 ±3.0	20,151	7,126	8,519
8	34983	Port Saint Lucie	40.8 ±1.6	49,001	17,203	18,198
9	34953	Port Saint Lucie	40.6 ±1.1	86,875	28,211	31,975
10	34982	Fort Pierce	39.7 ±4.5	31,143	12,016	12,179
11	34950	Fort Pierce	39.5 ±3.9	17,461	6,839	6,124
12	34946	Fort Pierce	39.1 ±2.4	6,852	2,831	3,127
13	34945	Fort Pierce	39.0 ±4.3	6,321	1,856	2,654
14	34947	Fort Pierce	33.7 ±2.9	12,804	4,109	5,852
15	34981	Fort Pierce	32.7 ±8.2	5,031	1,742	2,446

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; 15 of 15 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 45,160 households, on 80 carrier routes with 62,612 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 34949 on the EDDM route map

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Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in St. Lucie County has the highest median age?: 34949 (Fort Pierce), at 64.8 (±2.1), among 15 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.