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

06704 (Waterbury), at 43.2%, among 41 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 New Haven County, CT

These are the 25 ZIP codes in New Haven County with the highest share of households with children, out of 41 with at least 1,000 residents. 06704 (Waterbury, 43.2%), 06706 (Waterbury, 37.4%) and 06710 (Waterbury, 37.0%) lead the list. There is no single "best" ZIP code in New Haven 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 New Haven County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	06704	Waterbury	43.2%	31,713	11,768	10,147
2	06706	Waterbury	37.4%	15,551	5,506	5,742
3	06710	Waterbury	37.0%	9,942	3,905	4,031
4	06525	Woodbridge	37.0%	9,073	3,260	3,493
5	06524	Bethany	36.8%	5,288	1,735	1,896
6	06519	New Haven	36.4%	15,605	5,930	6,089
7	06762	Middlebury	34.9%	7,807	2,969	3,074
8	06477	Orange	33.0%	14,315	5,386	5,630
9	06716	Wolcott	32.5%	16,113	6,186	6,266
10	06705	Waterbury	32.2%	25,266	10,742	11,359
11	06473	North Haven	32.2%	24,743	9,740	10,532
12	06472	Northford	32.1%	6,363	2,309	2,453
13	06513	New Haven	31.7%	38,888	15,914	14,300
14	06410	Cheshire	31.6%	28,904	10,285	10,894
15	06514	Hamden	30.7%	26,803	10,868	11,231
16	06401	Ansonia	30.6%	19,315	7,258	7,787
17	06478	Oxford	30.0%	12,991	5,046	5,220
18	06770	Naugatuck	29.3%	31,823	12,749	13,004
19	06483	Seymour	29.2%	16,889	6,378	7,014
20	06516	West Haven	28.9%	55,351	20,938	22,077
21	06708	Waterbury	28.8%	29,594	11,932	12,477
22	06451	Meriden	28.8%	24,851	10,022	10,023
23	06450	Meriden	28.4%	35,694	14,609	15,222
24	06437	Guilford	28.3%	22,067	8,856	9,491
25	06461	Milford	27.3%	15,035	5,823	6,329

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; 41 of 41 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 26,174 households, on 45 carrier routes with 25,309 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 06704 on the EDDM route map

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Frequently asked questions

Which ZIP code in New Haven County has the highest share of households with children?: 06704 (Waterbury), at 43.2%, among 41 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.