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

21087 (Kingsville), at 52.0 (±5.8), among 44 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 Baltimore County, MD

These are the 25 ZIP codes in Baltimore County with the highest median age, out of 44 with at least 1,000 residents. 21087 (Kingsville, 52.0), 21131 (Phoenix, 49.4) and 21111 (Monkton, 48.7) lead the list. There is no single "best" ZIP code in Baltimore 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 Baltimore County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	21087	Kingsville	52.0 ±5.8	5,537	2,151	2,144
2	21131	Phoenix	49.4 ±4.2	7,141	2,600	2,761
3	21111	Monkton	48.7 ±3.6	4,714	1,908	1,915
4	21133	Randallstown	47.1 ±2.1	31,398	12,204	11,776
5	21161	White Hall	46.7 ±3.1	5,221	1,887	2,087
6	21136	Reisterstown	46.3 ±1.7	32,088	13,048	13,751
7	21208	Pikesville	46.0 ±2.7	37,276	15,735	15,601
8	21163	Woodstock	45.4 ±2.8	7,539	2,680	2,794
9	21093	Lutherville Timonium	45.3 ±1.3	39,100	15,688	16,590
10	21152	Sparks Glencoe	44.9 ±2.9	6,459	2,609	2,490
11	21102	Manchester	44.5 ±2.9	12,162	4,413	4,295
12	21053	Freeland	44.5 ±10.4	2,929	1,191	1,217
13	21104	Marriottsville	43.1 ±4.2	6,052	2,097	2,277
14	21074	Hampstead	42.9 ±3.3	14,777	5,889	6,081
15	21219	Sparrows Point	42.7 ±2.2	9,565	3,632	4,052
16	21221	Essex	42.4 ±1.8	43,487	17,286	18,571
17	21228	Catonsville	42.2 ±1.4	50,492	19,788	19,846
18	21237	Rosedale	41.8 ±1.8	31,425	12,417	12,953
19	21057	Glen Arm	41.3 ±6.1	4,386	1,545	1,629
20	21120	Parkton	40.8 ±4.6	7,440	2,599	2,652
21	21013	Baldwin	40.7 ±5.3	5,610	1,843	1,714
22	21234	Parkville	40.5 ±1.1	66,334	27,639	28,871
23	21128	Perry Hall	40.1 ±2.7	15,501	5,609	6,193
24	21286	Towson	39.6 ±3.3	21,853	9,765	10,721
25	21207	Gwynn Oak	39.5 ±1.6	47,099	18,976	19,296

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; 44 of 54 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 20,750 households, on 37 carrier routes with 20,683 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 21087 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 Baltimore County has the highest median age?: 21087 (Kingsville), at 52.0 (±5.8), among 44 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.