Which ZIP code in St. Louis County has the highest median household income?

63131 (Saint Louis), at $225,493 (±$30,989), among 44 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.

Richest ZIP codes in St. Louis County, MO

These are the 25 ZIP codes in St. Louis County with the highest median household income, out of 44 with at least 1,000 residents. 63131 (Saint Louis, $225,493), 63005 (Chesterfield, $198,469) and 63124 (Saint Louis, $193,942) lead the list. There is no single "best" ZIP code in St. Louis County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Richest ZIP codes in St. Louis County

Rank	ZIP	Mailing city	Median household income	Residents	Households	Residential mailboxes
1	63131	Saint Louis	$225,493 ±$30,989	17,935	6,511	6,482
2	63005	Chesterfield	$198,469 ±$19,982	19,779	7,134	7,509
3	63124	Saint Louis	$193,942 ±$41,849	10,839	4,832	5,165
4	63038	Wildwood	$186,450 ±$41,450	7,107	2,499	2,573
5	63122	Saint Louis	$136,385 ±$4,928	41,634	16,686	17,610
6	63141	Saint Louis	$133,851 ±$13,919	20,932	8,751	9,034
7	63040	Wildwood	$133,220 ±$14,083	8,526	3,113	3,361
8	63017	Chesterfield	$127,095 ±$7,333	43,243	17,957	18,881
9	63025	Eureka	$125,676 ±$18,980	19,508	6,911	7,352
10	63011	Ballwin	$124,454 ±$7,224	35,920	14,437	15,228
11	63127	Saint Louis	$122,663 ±$20,855	5,268	2,149	2,378
12	63021	Ballwin	$120,177 ±$5,461	55,666	22,131	22,762
13	63105	Saint Louis	$116,439 ±$13,478	18,875	7,088	7,515
14	63119	Saint Louis	$106,183 ±$5,177	34,181	14,476	14,485
15	63144	Saint Louis	$104,438 ±$16,619	9,505	4,769	4,919
16	63034	Florissant	$103,905 ±$10,486	18,908	6,670	7,124
17	63126	Saint Louis	$98,852 ±$11,120	15,452	6,208	6,435
18	63026	Fenton	$97,553 ±$4,678	45,354	17,488	18,439
19	63129	Saint Louis	$94,888 ±$5,746	51,553	21,301	22,430
20	63128	Saint Louis	$92,359 ±$9,940	30,540	13,032	13,196
21	63049	High Ridge	$92,333 ±$11,274	16,592	6,458	6,906
22	63043	Maryland Heights	$91,509 ±$6,565	21,924	9,402	9,703
23	63117	Saint Louis	$90,921 ±$5,910	9,261	4,440	5,025
24	63132	Saint Louis	$87,385 ±$17,511	14,283	5,997	6,095
25	63130	Saint Louis	$85,823 ±$11,089	28,910	12,580	12,990

How we ranked them

Ranked by median household income (ACS 5-year estimates, 2020–2024). The Census Bureau caps published medians at $250,000; ZIP codes at the cap are shown as $250,000+ and ordered by population. ZIP codes need at least 1,000 residents to be ranked; 44 of 46 qualify.

Which of these to mail, and why

Higher-income ZIP codes suit offers with a bigger ticket: remodeling, pools, roofing, financial planning, private schools, premium dining. A median describes the middle household, not every door, so the routes inside each ZIP still vary.

The top five ZIP codes on this list hold 37,662 households, on 120 carrier routes with 39,339 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 63131 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 St. Louis County has the highest median household income?: 63131 (Saint Louis), at $225,493 (±$30,989), among 44 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by median household income (ACS 5-year estimates, 2020–2024). The Census Bureau caps published medians at $250,000; ZIP codes at the cap are shown as $250,000+ and ordered by population.
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.