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

08609 (Trenton), at 26.9%, among 20 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 Mercer County, NJ

These are the 20 ZIP codes in Mercer County with the fastest population growth, out of 20 with at least 1,000 residents. 08609 (Trenton, 26.9%), 08611 (Trenton, 19.6%) and 08619 (Trenton, 11.7%) lead the list. There is no single "best" ZIP code in Mercer 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 Mercer County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	08609	Trenton	26.9%	15,938	4,880	5,122
2	08611	Trenton	19.6%	31,995	10,716	9,099
3	08619	Trenton	11.7%	24,089	9,924	10,011
4	08628	Trenton	11.6%	9,831	4,468	5,271
5	08520	Hightstown	9.8%	29,504	10,974	10,981
6	08550	Princeton Junction	9.3%	21,067	7,817	7,609
7	08610	Trenton	8.5%	33,465	12,315	12,123
8	08530	Lambertville	8.3%	8,119	3,596	3,487
9	08534	Pennington	4.0%	13,272	4,995	5,442
10	08540	Princeton	3.5%	50,388	18,609	20,795
11	08690	Trenton	2.7%	18,841	7,731	8,114
12	08638	Trenton	2.1%	22,816	9,045	9,709
13	08620	Trenton	0.0%	11,621	4,187	4,647
14	08648	Lawrence Township	-0.1%	31,323	12,030	12,715
15	08691	Robbinsville	-1.4%	16,607	6,859	6,843
16	08629	Trenton	-6.7%	13,013	4,296	4,109
17	08525	Hopewell	-8.3%	4,522	1,903	1,946
18	08618	Trenton	-9.3%	35,634	13,477	14,571
19	08560	Titusville	-12.2%	3,245	1,333	1,786
20	08542	Princeton	-56.6%	2,533	1,264	1,631

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; 20 of 23 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 40,962 households, on 64 carrier routes with 40,484 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 08609 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 Mercer County has the fastest population growth?: 08609 (Trenton), at 26.9%, among 20 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.