Which ZIP code in Louisville has the highest median age?

40243 (Louisville), at 48.0 (±3.2), 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 Louisville, KY

These are the 25 ZIP codes in Louisville, KY with the highest median age, out of 30 with at least 1,000 residents. 40243 (Louisville, 48.0), 40223 (Louisville, 43.1) and 40205 (Louisville, 42.7) lead the list. There is no single "best" ZIP code in Louisville; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Oldest ZIP codes in Louisville

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	40243	Louisville	48.0 ±3.2	12,002	5,741	—
2	40223	Louisville	43.1 ±2.2	22,798	9,971	11,261
3	40205	Louisville	42.7 ±1.3	24,664	10,476	10,794
4	40241	Louisville	42.1 ±1.8	30,696	13,288	14,672
5	40202	Louisville	41.9 ±3.4	7,261	3,363	4,031
6	40207	Louisville	41.2 ±1.3	28,903	13,759	14,842
7	40245	Louisville	40.8 ±1.8	39,835	15,048	—
8	40258	Louisville	40.7 ±2.2	26,841	10,684	11,386
9	40228	Louisville	40.5 ±3.5	18,085	7,279	8,542
10	40212	Louisville	40.1 ±3.2	14,661	6,444	6,942
11	40299	Louisville	40.0 ±2.0	42,207	17,163	19,657
12	40222	Louisville	39.6 ±2.6	21,470	10,047	11,627
13	40220	Louisville	39.3 ±2.3	35,078	15,591	15,976
14	40291	Louisville	39.1 ±2.0	41,222	16,591	—
15	40211	Louisville	39.1 ±4.0	20,407	8,781	9,572
16	40213	Louisville	39.0 ±2.9	16,054	7,320	7,579
17	40204	Louisville	39.0 ±1.7	14,034	7,731	8,190
18	40216	Louisville	38.9 ±2.4	44,047	17,342	19,299
19	40206	Louisville	38.4 ±1.3	20,161	10,576	11,477
20	40272	Louisville	38.2 ±1.3	38,289	14,313	16,196
21	40242	Louisville	37.5 ±2.7	11,168	5,010	4,906
22	40210	Louisville	37.2 ±2.6	13,518	5,612	6,280
23	40217	Louisville	37.2 ±2.4	11,663	6,407	6,215
24	40215	Louisville	37.1 ±2.7	20,532	8,207	9,265
25	40229	Louisville	36.2 ±1.5	41,299	15,630	17,185

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 42,839 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 40243 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 Louisville has the highest median age?: 40243 (Louisville), at 48.0 (±3.2), 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.