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

80543 (Milliken), at 48.7%, 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 Weld County, CO

These are the 25 ZIP codes in Weld County with the highest share of households with children, out of 26 with at least 1,000 residents. 80543 (Milliken, 48.7%), 80542 (Mead, 47.1%) and 80516 (Erie, 43.3%) lead the list. There is no single "best" ZIP code in Weld 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 Weld County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	80543	Milliken	48.7%	9,774	3,385	3,097
2	80542	Mead	47.1%	5,155	1,662	2,107
3	80516	Erie	43.3%	39,048	13,616	14,966
4	80620	Evans	43.2%	20,798	6,576	7,909
5	80530	Frederick	42.3%	6,242	2,258	—
6	80650	Pierce	42.2%	2,192	799	484
7	80623	Gilcrest	41.9%	1,026	296	—
8	80534	Johnstown	38.6%	20,502	7,457	10,148
9	80603	Brighton	38.6%	16,811	5,622	5,920
10	80645	La Salle	38.4%	4,917	1,760	1,568
11	80514	Dacono	38.2%	6,721	2,361	2,387
12	82082	Pine Bluffs	38.0%	1,891	840	205
13	80621	Fort Lupton	37.8%	15,060	5,052	5,884
14	80550	Windsor	36.2%	46,456	17,690	21,006
15	80643	Keenesburg	35.9%	5,119	1,798	1,665
16	80615	Eaton	35.4%	9,060	3,402	3,578
17	80631	Greeley	35.0%	53,722	17,863	18,439
18	80642	Hudson	34.5%	4,466	1,471	1,177
19	80610	Ault	34.1%	4,132	1,535	1,209
20	80634	Greeley	32.9%	65,622	25,280	29,891
21	80513	Berthoud	32.1%	18,271	6,925	8,166
22	80504	Longmont	30.8%	63,451	24,077	25,785
23	80651	Platteville	28.3%	4,837	1,759	1,584
24	80644	Kersey	27.1%	2,124	809	697
25	80524	Fort Collins	25.8%	40,030	17,399	18,661

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 39 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 27,497 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 80543 on the EDDM route map

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Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Weld County has the highest share of households with children?: 80543 (Milliken), at 48.7%, 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.