Which ZIP code in the Austin area has the lowest median age?

78705 (Austin), at 21.2 (±0.3), among 83 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 the Austin Area

These are the 25 ZIP codes in the Austin area with the lowest median age, out of 83 with at least 1,000 residents. 78705 (Austin, 21.2), 78666 (San Marcos, 26.9) and 78741 (Austin, 30.4) lead the list. There is no single "best" ZIP code in the Austin area; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Youngest ZIP codes in the Austin area

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	78705	Austin	21.2 ±0.3	33,238	12,136	12,382
2	78666	San Marcos	26.9 ±0.6	88,583	33,949	40,618
3	78741	Austin	30.4 ±0.7	45,951	23,867	29,381
4	78616	Dale	30.6 ±4.6	10,683	3,188	5,105
5	76537	Jarrell	31.1 ±2.0	16,272	5,448	10,169
6	78751	Austin	31.3 ±1.1	16,961	9,917	10,137
7	78752	Austin	31.6 ±1.7	23,317	11,160	11,558
8	78653	Manor	32.2 ±1.3	41,291	14,612	21,697
9	78724	Austin	32.2 ±1.2	31,103	10,379	14,823
10	78753	Austin	32.5 ±0.9	56,920	24,538	26,249
11	78656	Maxwell	32.5 ±5.1	2,847	976	3,072
12	78758	Austin	32.7 ±1.1	49,617	25,676	27,327
13	78744	Austin	33.2 ±1.1	50,986	20,976	26,491
14	78615	Coupland	33.2 ±5.2	1,637	549	666
15	78640	Kyle	33.4 ±1.0	77,531	27,375	34,550
16	78626	Georgetown	33.5 ±0.7	48,072	16,813	23,417
17	78721	Austin	33.8 ±1.1	10,997	4,973	6,325
18	78728	Austin	33.9 ±0.8	26,777	13,169	14,485
19	78754	Austin	34.4 ±1.7	32,690	13,345	15,436
20	78704	Austin	34.5 ±0.7	50,688	27,940	29,982
21	78747	Austin	34.5 ±2.3	22,180	9,096	12,677
22	78617	Del Valle	34.6 ±1.9	30,756	8,950	11,015
23	78723	Austin	34.8 ±1.4	38,129	16,669	19,936
24	78634	Hutto	34.9 ±1.5	46,413	15,808	21,724
25	78729	Austin	34.9 ±1.2	30,460	14,500	15,015

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; 83 of 89 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 78,588 households, on 97 carrier routes with 97,655 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 78705 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 the Austin area has the lowest median age?: 78705 (Austin), at 21.2 (±0.3), among 83 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.