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

62285 (Smithton), at $136,345 (±$18,280), among 28 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. Clair County, IL

These are the 25 ZIP codes in St. Clair County with the highest median household income, out of 28 with at least 1,000 residents. 62285 (Smithton, $136,345), 62236 (Columbia, $108,981) and 62269 (O Fallon, $103,818) lead the list. There is no single "best" ZIP code in St. Clair 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. Clair County

Rank	ZIP	Mailing city	Median household income	Residents	Households	Residential mailboxes
1	62285	Smithton	$136,345 ±$18,280	4,239	1,669	—
2	62236	Columbia	$108,981 ±$8,961	14,154	5,485	5,732
3	62269	O Fallon	$103,818 ±$6,649	35,923	14,244	—
4	62243	Freeburg	$103,342 ±$21,667	6,418	2,393	—
5	62225	Scott Air Force Base	$103,284 ±$13,748	5,242	1,509	—
6	62293	Trenton	$98,155 ±$11,212	4,433	1,817	—
7	62254	Lebanon	$96,492 ±$9,354	6,710	2,378	2,485
8	62240	East Carondelet	$96,063 ±$28,795	1,796	535	675
9	62258	Mascoutah	$94,655 ±$10,921	10,437	3,768	4,339
10	62260	Millstadt	$91,039 ±$13,976	6,668	2,781	3,081
11	62265	New Baden	$84,853 ±$19,577	4,555	1,744	—
12	62221	Belleville	$82,271 ±$7,214	29,875	12,151	—
13	62255	Lenzburg	$80,506 ±$23,564	1,092	459	—
14	62208	Fairview Heights	$80,205 ±$10,113	16,821	7,336	7,500
15	62257	Marissa	$78,750 ±$17,871	2,046	878	—
16	62223	Belleville	$73,700 ±$5,922	16,269	7,096	—
17	62226	Belleville	$70,797 ±$7,844	28,255	11,919	13,116
18	62234	Collinsville	$69,607 ±$4,637	31,648	13,843	14,250
19	62220	Belleville	$65,952 ±$2,544	19,152	7,873	8,109
20	62232	Caseyville	$64,269 ±$19,019	7,063	2,717	3,288
21	62239	Dupo	$61,191 ±$9,085	4,232	1,763	—
22	62264	New Athens	$57,015 ±$9,438	3,097	1,315	1,282
23	62205	East Saint Louis	$45,672 ±$8,840	6,459	2,276	—
24	62203	East Saint Louis	$42,111 ±$14,180	5,465	1,843	—
25	62204	East Saint Louis	$35,346 ±$14,232	4,055	1,710	1,625

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; 28 of 31 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 25,300 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 62285 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

Map it and price it

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Frequently asked questions

Which ZIP code in St. Clair County has the highest median household income?: 62285 (Smithton), at $136,345 (±$18,280), among 28 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.