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

21160 (Whiteford), at 52.7 (±16.1), among 20 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 Harford County, MD

These are the 20 ZIP codes in Harford County with the highest median age, out of 20 with at least 1,000 residents. 21160 (Whiteford, 52.7), 21154 (Street, 50.0) and 21111 (Monkton, 48.7) lead the list. There is no single "best" ZIP code in Harford 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 Harford County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	21160	Whiteford	52.7 ±16.1	2,441	968	960
2	21154	Street	50.0 ±3.9	6,544	2,403	2,336
3	21111	Monkton	48.7 ±3.6	4,714	1,908	1,915
4	21078	Havre De Grace	46.8 ±2.4	20,030	8,476	9,237
5	21161	White Hall	46.7 ±3.1	5,221	1,887	2,087
6	21047	Fallston	45.4 ±3.9	13,852	4,810	4,844
7	21034	Darlington	45.1 ±6.3	2,846	1,132	1,404
8	21028	Churchville	44.6 ±4.4	3,103	1,066	1,200
9	21050	Forest Hill	44.1 ±2.3	17,466	6,422	7,054
10	21084	Jarrettsville	44.0 ±6.1	7,070	2,724	2,745
11	21085	Joppa	42.3 ±2.8	17,307	6,801	7,391
12	21014	Bel Air	41.3 ±1.2	38,707	15,143	15,327
13	21132	Pylesville	41.0 ±2.1	3,160	1,072	1,025
14	21013	Baldwin	40.7 ±5.3	5,610	1,843	1,714
15	21015	Bel Air	40.4 ±1.5	30,013	11,012	12,380
16	21001	Aberdeen	37.7 ±1.3	27,168	11,204	12,341
17	21017	Belcamp	37.6 ±1.6	6,648	2,669	2,777
18	21040	Edgewood	36.4 ±3.4	24,960	9,795	9,430
19	21009	Abingdon	36.2 ±1.1	33,679	12,940	12,564
20	21005	Aberdeen Proving Ground	33.1 ±2.8	2,202	835	1,010

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; 20 of 22 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 15,642 households, on 31 carrier routes with 16,535 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 21160 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Harford County has the highest median age?: 21160 (Whiteford), at 52.7 (±16.1), among 20 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.