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

85121 (Casa Blanca), at 86.8%, among 30 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 Pinal County, AZ

These are the 25 ZIP codes in Pinal County with the fastest population growth, out of 30 with at least 1,000 residents. 85121 (Casa Blanca, 86.8%), 85138 (Maricopa, 43.7%) and 85658 (Marana, 39.8%) lead the list. There is no single "best" ZIP code in Pinal 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 Pinal County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	85121	Casa Blanca	86.8%	2,800	586	—
2	85138	Maricopa	43.7%	55,260	17,427	24,671
3	85658	Marana	39.8%	16,051	6,762	8,824
4	85147	Sacaton	34.8%	4,911	1,058	—
5	85142	Queen Creek	31.2%	93,700	28,504	27,047
6	85139	Maricopa	15.9%	20,784	6,371	8,242
7	85128	Coolidge	14.3%	19,487	6,181	7,869
8	85118	Gold Canyon	14.1%	14,932	7,427	9,040
9	85339	Laveen	13.9%	54,641	15,721	19,473
10	85143	San Tan Valley	13.5%	44,444	14,242	18,262
11	85140	San Tan Valley	8.5%	51,260	16,120	21,425
12	85623	Oracle	7.1%	5,558	2,902	2,297
13	85248	Chandler	5.9%	37,095	17,771	20,318
14	85122	Casa Grande	4.9%	61,624	21,564	25,762
15	85119	Apache Junction	4.8%	25,420	10,993	12,234
16	85194	Casa Grande	1.6%	8,077	3,298	4,453
17	85120	Apache Junction	-2.0%	31,191	14,188	18,736
18	85132	Florence	-3.1%	38,671	10,648	14,150
19	85739	Tucson	-4.3%	18,478	9,051	9,954
20	85137	Kearny	-5.1%	2,406	951	72
21	85631	San Manuel	-5.6%	3,508	1,573	1,363
22	85131	Eloy	-6.3%	18,794	4,838	5,565
23	85123	Arizona City	-11.2%	10,003	3,717	—
24	85618	Mammoth	-13.3%	1,550	555	—
25	85172	Stanfield	-15.2%	1,688	601	142

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; 30 of 32 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 54,337 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 85121 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

Map it and price it

EDDM guides

Frequently asked questions

Which ZIP code in Pinal County has the fastest population growth?: 85121 (Casa Blanca), at 86.8%, among 30 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.