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

56721 (East Grand Forks), at 34.3%, among 7 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 Polk County, MN

These are the 7 ZIP codes in Polk County with the highest share of households with children, out of 7 with at least 1,000 residents. 56721 (East Grand Forks, 34.3%), 56762 (Warren, 30.4%) and 56540 (Fertile, 29.3%) lead the list. There is no single "best" ZIP code in Polk 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 Polk County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	56721	East Grand Forks	34.3%	10,679	4,067	—
2	56762	Warren	30.4%	2,433	1,017	1,142
3	56540	Fertile	29.3%	1,891	735	807
4	56556	Mcintosh	28.5%	1,312	460	428
5	56542	Fosston	27.0%	2,486	1,034	1,158
6	56716	Crookston	25.9%	8,903	3,881	3,746
7	56535	Erskine	24.3%	1,307	539	—

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; 7 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 7,313 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 56721 on the EDDM route map

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Frequently asked questions

Which ZIP code in Polk County has the highest share of households with children?: 56721 (East Grand Forks), at 34.3%, among 7 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.