Which ZIP code in Kennebec County has the highest median household income?

04358 (South China), at $96,309 (±$12,098), among 22 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 Kennebec County, ME

These are the 22 ZIP codes in Kennebec County with the highest median household income, out of 22 with at least 1,000 residents. 04358 (South China, $96,309), 04284 (Wayne, $93,194) and 04351 (Manchester, $92,031) lead the list. There is no single "best" ZIP code in Kennebec 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 Kennebec County

Rank	ZIP	Mailing city	Median household income	Residents	Households	Residential mailboxes
1	04358	South China	$96,309 ±$12,098	4,526	1,895	1,625
2	04284	Wayne	$93,194 ±$25,940	1,101	533	501
3	04351	Manchester	$92,031 ±$15,733	2,424	983	932
4	04917	Belgrade	$88,338 ±$12,811	3,351	1,377	1,340
5	04355	Readfield	$86,504 ±$7,573	2,651	1,027	901
6	04364	Winthrop	$86,470 ±$3,802	6,191	2,522	2,397
7	04350	Litchfield	$84,904 ±$15,455	3,680	1,519	1,614
8	04259	Monmouth	$83,919 ±$21,757	3,610	1,492	1,333
9	04963	Oakland	$77,708 ±$13,524	7,524	3,121	3,415
10	04345	Gardiner	$77,410 ±$13,534	12,579	5,083	5,224
11	04352	Mount Vernon	$74,395 ±$6,347	1,716	735	731
12	04989	Vassalboro	$72,300 ±$6,941	4,592	1,960	1,925
13	04344	Farmingdale	$71,635 ±$14,675	3,017	1,439	460
14	04927	Clinton	$71,458 ±$39,131	3,385	1,394	1,149
15	04347	Hallowell	$68,398 ±$9,751	2,592	1,289	1,011
16	04346	Randolph	$66,574 ±$15,734	1,610	774	710
17	04363	Windsor	$63,178 ±$5,189	2,690	1,071	732
18	04988	Unity	$62,929 ±$5,928	1,894	588	663
19	04910	Albion	$62,361 ±$22,999	2,204	957	842
20	04349	Kents Hill	$59,500 ±$16,916	1,383	620	513
21	04901	Waterville	$57,403 ±$5,756	27,870	11,451	11,559
22	04330	Augusta	$54,775 ±$3,779	26,690	12,370	11,962

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; 22 of 27 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 5,815 households, on 12 carrier routes with 5,299 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 04358 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 Kennebec County has the highest median household income?: 04358 (South China), at $96,309 (±$12,098), among 22 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.