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

21704 (Frederick), at 56.4%, among 26 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 Frederick County, MD

These are the 25 ZIP codes in Frederick County with the highest share of households with children, out of 26 with at least 1,000 residents. 21704 (Frederick, 56.4%), 21774 (New Market, 47.7%) and 21770 (Monrovia, 47.7%) lead the list. There is no single "best" ZIP code in Frederick 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 Frederick County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	21704	Frederick	56.4%	20,006	6,136	7,734
2	21774	New Market	47.7%	17,134	5,647	6,693
3	21770	Monrovia	47.7%	8,751	2,622	2,971
4	21703	Frederick	42.1%	41,960	15,517	—
5	21798	Woodsboro	41.4%	2,928	929	914
6	21754	Ijamsville	40.6%	8,156	2,660	2,604
7	21777	Point Of Rocks	40.6%	2,462	817	624
8	21769	Middletown	36.5%	11,965	4,146	4,409
9	21771	Mount Airy	35.1%	33,031	11,226	11,089
10	21787	Taneytown	34.8%	11,645	4,431	4,630
11	21702	Frederick	34.6%	49,605	18,525	19,996
12	21791	Union Bridge	34.5%	5,340	1,968	1,829
13	20842	Dickerson	34.2%	2,369	802	753
14	21793	Walkersville	34.0%	10,719	3,890	3,825
15	21758	Knoxville	32.6%	4,409	1,588	1,841
16	21773	Myersville	31.6%	5,826	1,997	1,935
17	21783	Smithsburg	30.5%	9,910	3,632	3,304
18	21788	Thurmont	29.8%	11,654	4,649	4,704
19	21776	New Windsor	29.7%	6,261	2,346	2,091
20	21727	Emmitsburg	27.7%	6,052	1,673	1,454
21	21710	Adamstown	27.3%	4,661	1,672	1,717
22	21755	Jefferson	26.8%	5,909	2,136	2,284
23	21716	Brunswick	26.6%	7,200	2,924	3,371
24	21701	Frederick	26.4%	43,048	18,651	20,269
25	21780	Sabillasville	24.8%	2,159	781	670

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; 26 of 33 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 30,851 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 21704 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 Frederick County has the highest share of households with children?: 21704 (Frederick), at 56.4%, among 26 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.