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

80547 (Timnath), at 242.7%, among 16 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 Larimer County, CO

These are the 16 ZIP codes in Larimer County with the fastest population growth, out of 16 with at least 1,000 residents. 80547 (Timnath, 242.7%), 80513 (Berthoud, 41.4%) and 80536 (Livermore, 25.8%) lead the list. There is no single "best" ZIP code in Larimer 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 Larimer County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	80547	Timnath	242.7%	8,821	2,961	4,276
2	80513	Berthoud	41.4%	18,271	6,925	8,166
3	80536	Livermore	25.8%	2,383	974	1,024
4	80512	Bellvue	20.2%	1,903	939	846
5	80534	Johnstown	19.8%	20,502	7,457	10,148
6	80549	Wellington	18.0%	14,325	5,088	4,694
7	80528	Fort Collins	10.2%	24,960	9,325	10,079
8	80524	Fort Collins	9.7%	40,030	17,399	18,661
9	80521	Fort Collins	5.6%	38,776	14,260	14,164
10	80537	Loveland	1.9%	44,425	19,474	20,236
11	80538	Loveland	1.7%	50,110	21,474	24,030
12	80540	Lyons	1.4%	4,642	2,025	1,402
13	80525	Fort Collins	-3.9%	54,211	24,410	25,302
14	80526	Fort Collins	-4.2%	44,326	19,147	19,654
15	80517	Estes Park	-7.6%	9,657	4,533	5,645
16	80535	Laporte	-27.0%	1,896	965	729

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; 16 of 21 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 19,256 households, on 36 carrier routes with 24,460 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 80547 on the EDDM route map

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Frequently asked questions

Which ZIP code in Larimer County has the fastest population growth?: 80547 (Timnath), at 242.7%, among 16 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.