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

63025 (Eureka), at 32.3%, among 17 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 Jefferson County, MO

These are the 17 ZIP codes in Jefferson County with the fastest population growth, out of 17 with at least 1,000 residents. 63025 (Eureka, 32.3%), 63050 (Hillsboro, 18.5%) and 63048 (Herculaneum, 9.4%) lead the list. There is no single "best" ZIP code in Jefferson 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 Jefferson County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	63025	Eureka	32.3%	19,508	6,911	7,352
2	63050	Hillsboro	18.5%	18,744	6,555	6,565
3	63048	Herculaneum	9.4%	4,228	1,611	1,762
4	63028	Festus	5.9%	28,457	11,061	12,107
5	63069	Pacific	5.5%	15,697	6,416	6,428
6	63052	Imperial	4.5%	28,712	10,659	11,632
7	63019	Crystal City	3.5%	4,489	1,836	1,866
8	63070	Pevely	3.2%	8,428	3,165	3,368
9	63026	Fenton	2.3%	45,354	17,488	18,439
10	63015	Catawissa	0.1%	1,939	706	878
11	63012	Barnhart	-0.4%	10,314	3,857	4,141
12	63020	De Soto	-1.4%	20,166	7,989	8,661
13	63051	House Springs	-1.7%	13,436	5,027	5,942
14	63010	Arnold	-3.9%	34,478	13,885	14,513
15	63049	High Ridge	-4.2%	16,592	6,458	6,906
16	63023	Dittmer	-14.9%	5,002	1,895	1,892
17	63016	Cedar Hill	-15.5%	6,459	2,682	3,317

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; 17 of 19 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 32,554 households, on 62 carrier routes with 34,214 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 63025 on the EDDM route map

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Frequently asked questions

Which ZIP code in Jefferson County has the fastest population growth?: 63025 (Eureka), at 32.3%, among 17 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.