Which ZIP code in Sioux County has the fastest population growth?

51238 (Hospers), at 23.1%, among 11 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.

Fastest-growing ZIP codes in Sioux County, IA

These are the 11 ZIP codes in Sioux County with the fastest population growth, out of 11 with at least 1,000 residents. 51238 (Hospers, 23.1%), 51027 (Ireton, 15.1%) and 51003 (Alton, 13.1%) lead the list. There is no single "best" ZIP code in Sioux County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Fastest-growing ZIP codes in Sioux County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	51238	Hospers	23.1%	1,502	556	243
2	51027	Ireton	15.1%	1,280	415	—
3	51003	Alton	13.1%	1,938	730	—
4	51250	Sioux Center	13.0%	9,970	3,373	3,302
5	51201	Sheldon	10.0%	6,430	2,550	—
6	51023	Hawarden	6.3%	3,473	1,236	—
7	51247	Rock Valley	5.4%	5,094	1,825	—
8	51041	Orange City	2.0%	7,324	2,520	—
9	51240	Inwood	-9.0%	1,914	632	422
10	51234	Boyden	-9.0%	1,172	412	345
11	51239	Hull	-9.2%	2,876	1,051	—

How we ranked them

Ranked by the change in ACS population estimates between the 2015–2019 and 2020–2024 releases. Both are 5-year averages, and ZIP code areas were redrawn for 2020, so a large change can partly reflect a boundary change. Both periods must have at least 1,000 residents. ZIP codes need at least 1,000 residents to be ranked; 11 of 16 qualify.

Which of these to mail, and why

Growing ZIP codes add households every year, which means new homes, new routes and customers without a go-to provider yet. Check the route map: new subdivisions can appear as new carrier routes.

The top five ZIP codes on this list hold 7,624 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 51238 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 Sioux County has the fastest population growth?: 51238 (Hospers), at 23.1%, among 11 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by the change in ACS population estimates between the 2015–2019 and 2020–2024 releases. Both are 5-year averages, and ZIP code areas were redrawn for 2020, so a large change can partly reflect a boundary change. Both periods must have 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.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.