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

78566 (Los Fresnos), at 51.4%, among 13 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 Cameron County, TX

These are the 13 ZIP codes in Cameron County with the highest share of households with children, out of 13 with at least 1,000 residents. 78566 (Los Fresnos, 51.4%), 78526 (Brownsville, 48.2%) and 78586 (San Benito, 41.3%) lead the list. There is no single "best" ZIP code in Cameron 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 Cameron County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	78566	Los Fresnos	51.4%	25,110	7,241	8,016
2	78526	Brownsville	48.2%	60,012	17,516	18,847
3	78586	San Benito	41.3%	50,964	15,699	15,753
4	78521	Brownsville	41.0%	87,380	27,731	31,923
5	78593	Santa Rosa	41.0%	5,455	1,555	852
6	78520	Brownsville	39.9%	64,740	20,847	22,917
7	78552	Harlingen	39.3%	42,332	13,567	14,634
8	78575	Olmito	35.9%	4,575	1,620	2,689
9	78583	Rio Hondo	33.7%	5,236	1,952	1,958
10	78550	Harlingen	33.3%	53,335	19,733	21,652
11	78559	La Feria	30.3%	12,169	4,275	5,048
12	78578	Port Isabel	24.8%	10,016	4,379	4,061
13	78597	South Padre Island	3.1%	2,935	1,642	613

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; 13 of 16 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 69,742 households, on 92 carrier routes with 75,391 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 78566 on the EDDM route map

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Frequently asked questions

Which ZIP code in Cameron County has the highest share of households with children?: 78566 (Los Fresnos), at 51.4%, among 13 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.