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

57719 (Box Elder), at 49.6%, among 9 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 Pennington County, SD

These are the 9 ZIP codes in Pennington County with the fastest population growth, out of 9 with at least 1,000 residents. 57719 (Box Elder, 49.6%), 57744 (Hermosa, 6.9%) and 57703 (Rapid City, 5.5%) lead the list. There is no single "best" ZIP code in Pennington 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 Pennington County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	57719	Box Elder	49.6%	12,221	4,547	—
2	57744	Hermosa	6.9%	2,421	1,052	902
3	57703	Rapid City	5.5%	18,013	7,166	—
4	57790	Wall	2.0%	1,147	398	210
5	57702	Rapid City	1.5%	35,595	15,314	16,025
6	57701	Rapid City	0.2%	45,795	18,803	—
7	57745	Hill City	-16.6%	1,894	660	—
8	57732	Deadwood	-21.7%	1,714	980	1,177
9	57761	New Underwood	-25.7%	1,180	385	—

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; 9 of 15 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 28,477 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 57719 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 Pennington County has the fastest population growth?: 57719 (Box Elder), at 49.6%, among 9 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.