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

33037 (Key Largo), at 36.6%, among 8 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 Monroe County, FL

These are the 8 ZIP codes in Monroe County with the fastest population growth, out of 8 with at least 1,000 residents. 33037 (Key Largo, 36.6%), 33070 (Tavernier, 12.4%) and 33050 (Marathon, 11.8%) lead the list. There is no single "best" ZIP code in Monroe 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 Monroe County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	33037	Key Largo	36.6%	14,770	6,083	8,794
2	33070	Tavernier	12.4%	5,768	2,507	3,432
3	33050	Marathon	11.8%	10,561	4,313	6,380
4	33036	Islamorada	8.0%	3,777	1,808	2,584
5	33034	Homestead	7.6%	23,823	6,656	10,316
6	33040	Key West	2.8%	35,429	14,574	16,187
7	33042	Summerland Key	-2.7%	6,441	2,820	3,782
8	33043	Big Pine Key	-12.9%	4,298	1,879	2,874

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; 8 of 11 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 21,367 households, on 51 carrier routes with 31,506 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 33037 on the EDDM route map

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Frequently asked questions

Which ZIP code in Monroe County has the fastest population growth?: 33037 (Key Largo), at 36.6%, among 8 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.