Which ZIP code in Baltimore County has the highest share of households with children?

21155 (Upperco), at 39.6%, among 43 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.

ZIP codes with the most families with kids in Baltimore County, MD

These are the 25 ZIP codes in Baltimore County with the highest share of households with children, out of 43 with at least 1,000 residents. 21155 (Upperco, 39.6%), 21162 (White Marsh, 38.3%) and 21013 (Baldwin, 37.7%) 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.

ZIP codes with the most families with kids in Baltimore County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	21155	Upperco	39.6%	3,313	1,032	1,008
2	21162	White Marsh	38.3%	4,639	1,559	1,856
3	21013	Baldwin	37.7%	5,610	1,843	1,714
4	21111	Monkton	36.1%	4,714	1,908	1,915
5	21120	Parkton	35.4%	7,440	2,599	2,652
6	21104	Marriottsville	34.6%	6,052	2,097	2,277
7	21131	Phoenix	34.2%	7,141	2,600	2,761
8	21244	Windsor Mill	33.3%	38,208	14,157	15,420
9	21219	Sparrows Point	32.8%	9,565	3,632	4,052
10	21057	Glen Arm	32.7%	4,386	1,545	1,629
11	21117	Owings Mills	32.5%	62,816	25,193	25,942
12	21209	Baltimore	32.4%	30,126	11,621	12,261
13	21163	Woodstock	32.4%	7,539	2,680	2,794
14	21236	Nottingham	31.8%	39,514	15,698	16,947
15	21152	Sparks Glencoe	31.3%	6,459	2,609	2,490
16	21220	Middle River	31.0%	42,824	16,544	18,583
17	21212	Baltimore	31.0%	33,974	12,971	13,109
18	21053	Freeland	30.6%	2,929	1,191	1,217
19	21222	Dundalk	30.5%	59,407	22,512	23,157
20	21102	Manchester	29.7%	12,162	4,413	4,295
21	21128	Perry Hall	29.6%	15,501	5,609	6,193
22	21206	Baltimore	29.4%	48,902	20,480	20,390
23	21207	Gwynn Oak	29.2%	47,099	18,976	19,296
24	21227	Halethorpe	28.7%	34,907	13,396	—
25	21228	Catonsville	28.0%	50,492	19,788	19,846

How we ranked them

Ranked by the share of households with one or more people under 18 (ACS Data Profile, 2020–2024). The Census Bureau does not publish a margin of error for this share in our files. ZIP codes need at least 1,000 residents to be ranked; 43 of 54 qualify.

Which of these to mail, and why

Households with children buy tutoring, youth sports, pediatric and family dental care, child care, birthday venues and family dining. EDDM reaches every door on a route, so a higher share means more of your pieces land with families.

The top five ZIP codes on this list hold 8,941 households, on 18 carrier routes with 9,145 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 21155 on the EDDM route map

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Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Baltimore County has the highest share of households with children?: 21155 (Upperco), at 39.6%, among 43 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by the share of households with one or more people under 18 (ACS Data Profile, 2020–2024). The Census Bureau does not publish a margin of error for this share in our files.
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.