Which ZIP code in Alameda County has the lowest median age?

94720 (Berkeley), at 19.9 (±0.5), 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.

Youngest ZIP codes in Alameda County, CA

These are the 25 ZIP codes in Alameda County with the lowest median age, out of 50 with at least 1,000 residents. 94720 (Berkeley, 19.9), 94704 (Berkeley, 21.9) and 94709 (Berkeley, 30.4) 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.

Youngest ZIP codes in Alameda County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	94720	Berkeley	19.9 ±0.5	5,763	222	—
2	94704	Berkeley	21.9 ±0.4	23,788	8,227	10,860
3	94709	Berkeley	30.4 ±1.6	12,146	5,429	5,599
4	94621	Oakland	33.3 ±1.3	33,840	10,359	9,688
5	94603	Oakland	34.8 ±1.3	35,742	10,527	10,329
6	95391	Tracy	35.1 ±1.6	25,574	7,097	9,181
7	94608	Emeryville	35.2 ±0.7	34,395	16,568	16,928
8	94607	Oakland	35.6 ±0.8	28,804	13,453	14,298
9	94609	Oakland	35.6 ±1.1	23,928	11,049	11,474
10	94601	Oakland	36.1 ±1.0	53,259	16,734	16,444
11	94538	Fremont	36.7 ±1.1	67,781	23,628	25,566
12	95377	Tracy	36.7 ±1.4	37,739	10,170	12,874
13	94703	Berkeley	37.0 ±3.0	20,934	8,662	9,254
14	94568	Dublin	37.4 ±0.7	70,803	24,165	25,529
15	94560	Newark	37.9 ±1.0	46,903	15,252	16,281
16	94578	San Leandro	37.9 ±1.7	41,769	13,904	14,614
17	94606	Oakland	37.9 ±1.4	39,966	16,337	16,693
18	94544	Hayward	38.0 ±0.8	76,947	22,991	25,402
19	94612	Oakland	38.0 ±2.0	18,175	11,097	13,873
20	94541	Hayward	38.2 ±0.8	67,139	21,584	23,568
21	94605	Oakland	38.6 ±1.5	44,103	16,594	16,298
22	94536	Fremont	38.9 ±0.8	70,619	25,205	26,307
23	94555	Fremont	38.9 ±0.8	37,501	11,847	11,866
24	94619	Oakland	39.0 ±1.6	26,831	9,809	9,700
25	94706	Albany	39.1 ±1.3	19,969	7,945	8,550

How we ranked them

Ranked by median age of all residents, lowest first (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 50 of 52 qualify.

Which of these to mail, and why

Younger ZIP codes skew toward renters, students and young families: fitness, quick-service food, apartments, entertainment and first-time-buyer offers.

The top five ZIP codes on this list hold 34,764 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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EDDM guides

Frequently asked questions

Which ZIP code in Alameda County has the lowest median age?: 94720 (Berkeley), at 19.9 (±0.5), among 50 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by median age of all residents, lowest first (ACS 5-year estimates, 2020–2024).
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.