Which ZIP code in San Juan County has the fastest population growth?

00909 (San Juan), at 19.9%, 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 San Juan Municipio, PR

These are the 17 ZIP codes in San Juan Municipio with the fastest population growth, out of 17 with at least 1,000 residents. 00909 (San Juan, 19.9%), 00907 (San Juan, 4.4%) and 00921 (San Juan, 4.1%) lead the list. There is no single "best" ZIP code in San Juan 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 San Juan County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	00909	San Juan	19.9%	5,633	2,947	3,053
2	00907	San Juan	4.4%	15,817	8,730	9,830
3	00921	San Juan	4.1%	33,119	14,422	12,943
4	00924	San Juan	3.7%	49,922	21,364	18,787
5	00912	San Juan	3.3%	5,845	2,872	2,578
6	00923	San Juan	2.9%	24,551	11,026	10,326
7	00911	San Juan	2.9%	7,297	3,990	4,288
8	00918	San Juan	2.6%	16,172	8,255	8,567
9	00927	San Juan	1.8%	13,868	6,569	6,708
10	00969	Guaynabo	0.7%	42,231	17,031	14,678
11	00926	San Juan	-1.1%	92,284	39,310	35,964
12	00915	San Juan	-1.1%	24,607	11,125	9,141
13	00920	San Juan	-2.3%	15,900	7,184	6,184
14	00901	San Juan	-3.3%	6,398	3,111	3,151
15	00917	San Juan	-5.9%	17,116	8,252	7,740
16	00913	San Juan	-12.0%	6,943	3,329	3,423
17	00925	San Juan	-26.5%	4,882	2,608	3,086

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 18 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 50,335 households, on 46 carrier routes with 47,191 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 00909 on the EDDM route map

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Frequently asked questions

Which ZIP code in San Juan County has the fastest population growth?: 00909 (San Juan), at 19.9%, 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.