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

21756 (Keedysville), at 41.5%, among 15 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 Washington County, MD

These are the 15 ZIP codes in Washington County with the highest share of households with children, out of 15 with at least 1,000 residents. 21756 (Keedysville, 41.5%), 21722 (Clear Spring, 38.8%) and 21758 (Knoxville, 32.6%) lead the list. There is no single "best" ZIP code in Washington 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 Washington County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	21756	Keedysville	41.5%	3,640	1,394	1,319
2	21722	Clear Spring	38.8%	6,721	2,222	1,989
3	21758	Knoxville	32.6%	4,409	1,588	1,841
4	21779	Rohrersville	32.5%	1,311	462	420
5	21742	Hagerstown	31.0%	34,069	13,231	14,437
6	21783	Smithsburg	30.5%	9,910	3,632	3,304
7	21740	Hagerstown	30.2%	64,792	25,276	26,763
8	21733	Fairplay	29.5%	1,275	471	451
9	21795	Williamsport	28.8%	10,144	3,935	4,115
10	21713	Boonsboro	28.7%	9,846	3,899	3,877
11	21767	Maugansville	28.1%	1,031	541	338
12	21719	Cascade	26.5%	1,178	494	551
13	21782	Sharpsburg	23.2%	3,704	1,522	1,426
14	21750	Hancock	20.0%	3,417	1,628	1,686
15	21734	Funkstown	12.4%	1,076	493	—

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; 15 of 19 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 18,897 households, on 38 carrier routes with 20,006 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 21756 on the EDDM route map

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Frequently asked questions

Which ZIP code in Washington County has the highest share of households with children?: 21756 (Keedysville), at 41.5%, among 15 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.