Which ZIP code in Will County has the highest median age?

60417 (Crete), at 49.1 (±2.2), among 35 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 Will County, IL

These are the 25 ZIP codes in Will County with the highest median age, out of 35 with at least 1,000 residents. 60417 (Crete, 49.1), 60421 (Elwood, 47.3) and 60449 (Monee, 46.5) lead the list. There is no single "best" ZIP code in Will 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 Will County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	60417	Crete	49.1 ±2.2	14,901	5,988	6,108
2	60421	Elwood	47.3 ±5.8	3,649	1,492	1,460
3	60449	Monee	46.5 ±4.6	9,477	3,597	3,477
4	60481	Wilmington	44.5 ±3.4	11,195	4,595	5,204
5	60491	Homer Glen	44.3 ±2.5	22,757	7,648	8,471
6	60408	Braidwood	44.1 ±6.2	5,327	2,128	2,272
7	60448	Mokena	43.7 ±2.7	24,405	8,933	9,425
8	60404	Shorewood	43.2 ±2.8	20,385	7,512	7,668
9	60423	Frankfort	43.0 ±1.5	32,836	11,162	12,071
10	60468	Peotone	42.9 ±4.7	5,809	2,354	2,227
11	60565	Naperville	42.7 ±1.7	40,483	14,079	14,090
12	60487	Tinley Park	42.1 ±1.8	26,043	9,366	9,594
13	60564	Naperville	41.0 ±1.7	47,016	15,873	16,277
14	60401	Beecher	40.4 ±3.9	7,647	2,772	2,648
15	60475	Steger	39.6 ±4.0	10,035	4,255	4,171
16	60441	Lockport	39.3 ±1.6	36,844	12,956	13,896
17	60407	Braceville	39.2 ±6.6	1,812	649	574
18	60585	Plainfield	38.9 ±0.9	25,960	8,037	9,126
19	60544	Plainfield	38.8 ±2.6	27,306	9,957	11,646
20	60451	New Lenox	38.4 ±1.1	37,361	12,457	13,854
21	60403	Crest Hill	38.3 ±2.6	18,371	8,164	7,648
22	60433	Joliet	38.3 ±3.5	16,382	5,540	5,665
23	60435	Joliet	37.8 ±1.6	48,167	18,795	18,513
24	60490	Bolingbrook	37.6 ±2.0	22,156	6,729	7,248
25	60440	Bolingbrook	37.1 ±1.4	51,940	17,230	17,413

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; 35 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 23,320 households, on 47 carrier routes with 24,720 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 60417 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Will County has the highest median age?: 60417 (Crete), at 49.1 (±2.2), among 35 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.