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

94720 (Berkeley), at 102.6%, among 50 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 Alameda County, CA

These are the 25 ZIP codes in Alameda County with the fastest population growth, out of 50 with at least 1,000 residents. 94720 (Berkeley, 102.6%), 94514 (Byron, 32.4%) and 94568 (Dublin, 27.3%) lead the list. There is no single "best" ZIP code in Alameda 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 Alameda County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	94720	Berkeley	102.6%	5,763	222	—
2	94514	Byron	32.4%	1,953	576	218
3	94568	Dublin	27.3%	70,803	24,165	25,529
4	95391	Tracy	27.0%	25,574	7,097	9,181
5	95377	Tracy	17.6%	37,739	10,170	12,874
6	94612	Oakland	15.1%	18,175	11,097	13,873
7	94619	Oakland	11.3%	26,831	9,809	9,700
8	94608	Emeryville	10.9%	34,395	16,568	16,928
9	94707	Berkeley	8.9%	12,811	5,267	5,191
10	94607	Oakland	7.4%	28,804	13,453	14,298
11	94710	Berkeley	6.2%	8,380	3,780	3,679
12	94602	Oakland	5.3%	31,759	12,496	12,325
13	94708	Berkeley	4.9%	11,947	4,800	4,846
14	94606	Oakland	4.6%	39,966	16,337	16,693
15	94702	Berkeley	4.6%	17,635	7,662	8,187
16	94705	Berkeley	3.4%	13,991	5,886	6,302
17	94611	Oakland	2.9%	40,116	18,387	19,060
18	94610	Oakland	2.2%	32,628	16,372	16,254
19	94541	Hayward	1.8%	67,139	21,584	23,568
20	94605	Oakland	1.6%	44,103	16,594	16,298
21	94709	Berkeley	1.6%	12,146	5,429	5,599
22	94542	Hayward	1.2%	14,871	4,936	5,341
23	94546	Castro Valley	1.1%	44,855	15,565	17,513
24	94609	Oakland	0.9%	23,928	11,049	11,474
25	94538	Fremont	0.5%	67,781	23,628	25,566

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; 50 of 52 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 42,230 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 94720 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Alameda County has the fastest population growth?: 94720 (Berkeley), at 102.6%, among 50 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.