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

21784 (Sykesville), at 40.7%, among 14 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 Carroll County, MD

These are the 14 ZIP codes in Carroll County with the highest share of households with children, out of 14 with at least 1,000 residents. 21784 (Sykesville, 40.7%), 21155 (Upperco, 39.6%) and 21797 (Woodbine, 36.9%) lead the list. There is no single "best" ZIP code in Carroll 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 Carroll County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	21784	Sykesville	40.7%	39,258	13,416	14,941
2	21155	Upperco	39.6%	3,313	1,032	1,008
3	21797	Woodbine	36.9%	8,643	2,849	3,313
4	21771	Mount Airy	35.1%	33,031	11,226	11,089
5	21787	Taneytown	34.8%	11,645	4,431	4,630
6	21104	Marriottsville	34.6%	6,052	2,097	2,277
7	21791	Union Bridge	34.5%	5,340	1,968	1,829
8	21048	Finksburg	33.0%	10,481	3,723	4,112
9	21158	Westminster	32.1%	22,083	8,451	8,114
10	21102	Manchester	29.7%	12,162	4,413	4,295
11	21776	New Windsor	29.7%	6,261	2,346	2,091
12	21157	Westminster	28.6%	38,984	14,785	15,042
13	21074	Hampstead	26.7%	14,777	5,889	6,081
14	21757	Keymar	23.1%	2,671	1,018	1,097

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; 14 of 14 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 32,954 households, on 64 carrier routes with 34,981 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 21784 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 Carroll County has the highest share of households with children?: 21784 (Sykesville), at 40.7%, among 14 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.