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

60142 (Huntley), at 49.6 (±1.9), among 18 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 McHenry County, IL

These are the 18 ZIP codes in McHenry County with the highest median age, out of 18 with at least 1,000 residents. 60142 (Huntley, 49.6), 60051 (Mchenry, 44.5) and 60021 (Fox River Grove, 43.7) lead the list. There is no single "best" ZIP code in McHenry 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 McHenry County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	60142	Huntley	49.6 ±1.9	29,692	12,891	13,499
2	60051	Mchenry	44.5 ±1.7	24,621	10,054	10,708
3	60021	Fox River Grove	43.7 ±3.3	4,996	1,903	2,203
4	60012	Crystal Lake	43.5 ±1.7	12,368	4,220	4,513
5	60081	Spring Grove	42.9 ±7.4	9,088	3,335	3,615
6	60050	Mchenry	42.7 ±2.9	31,781	13,188	14,101
7	60071	Richmond	42.6 ±5.2	3,851	1,843	1,789
8	60098	Woodstock	42.2 ±1.6	33,130	13,168	13,058
9	60102	Algonquin	41.6 ±1.7	32,286	11,751	12,764
10	60034	Hebron	40.9 ±6.2	2,033	703	807
11	60013	Cary	40.2 ±1.4	26,694	9,892	9,845
12	60014	Crystal Lake	39.9 ±1.4	48,590	17,644	19,027
13	60180	Union	39.7 ±25.0	1,831	704	646
14	60042	Island Lake	39.4 ±2.3	8,347	3,088	3,432
15	60152	Marengo	37.1 ±5.4	12,417	4,575	5,071
16	60097	Wonder Lake	36.9 ±3.8	11,983	4,486	5,292
17	60156	Lake In The Hills	36.8 ±0.8	28,800	9,692	10,275
18	60033	Harvard	33.7 ±4.3	12,999	4,697	5,044

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; 18 of 19 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 32,403 households, on 54 carrier routes with 34,538 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 60142 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 McHenry County has the highest median age?: 60142 (Huntley), at 49.6 (±1.9), among 18 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.