What ZIP codes serve Longmont, CO?

Longmont, CO is served by the following ZIP codes: 80501, 80503, 80504.

What is the average temperature in Longmont?

In Longmont, CO, the average annual high temperature is 66°F and the average low is 34°F, with 15.2 inches of annual precipitation.

How do I verify a Longmont address?

Use MailColt's free address verification tool to instantly check any Longmont, CO address for deliverability. Enter the street address, city, state, and ZIP code to get a confidence score and standardized formatting.

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Longmont is the #24 city in Colorado by population, with a population of 141,102 across 3 ZIP codes. Average temperatures range from 34.0°F to 65.9°F, with 15.2" of annual precipitation. Professional Services leads the business landscape, accounting for 603 of the area's establishments.

ZIP Codes

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Income by ZIP Code in Longmont, CO

ZIP Code	Population	Median Income	Median Home Value	Median Rent
80501	43,591	$77,705	$461,400	$1,586
80503	36,206	$118,465	$704,800	$1,843
80504	61,305	$109,671	$556,500	$1,895

Climate in Longmont, CO

Average monthly temperatures and precipitation.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg High	44°	47°	57°	63°	73°	84°	91°	88°	80°	66°	54°	45°
Avg Low	14°	17°	26°	32°	41°	50°	55°	54°	46°	33°	24°	14°
Precip	0.6"	0.6"	1.2"	2.0"	2.0"	1.8"	1.7"	1.9"	1.3"	1.0"	0.8"	0.5"
Snow	-	-	-	-	-	-	-	-	-	-	-	-

Top Industries in Longmont, CO

Industry	Establishments
Professional, scientific, and technical services	603
Construction	454
Health care and social assistance	422
Retail trade	398
Other services (except public administration)	341
Accommodation and food services	312
Administrative and support and waste management and remediation services	243
Manufacturing	236
Real estate and rental and leasing	232
Finance and insurance	196

Historic Landmarks in Longmont

Longmont has 13 properties listed on the National Register of Historic Places, including:

Callahan, T. M., House — 312 Terry St.
Dickens Opera House — 300 Main St.
Downtown Longmont Historic District — Roughly Main, Coffman & Kimbark Sts. between 3rd & 5th Aves.
East Side Historic District — Roughly bounded by Long's Peak Ave., Collyer St., Fourth Ave., and Emery St.
Empson Cannery — 15 3rd Ave.
Hoverhome and Hover Farmstead — 1303-1309 Hover Rd.
Longmont Carnegie Library — 457 Fourth Ave.
Longmont College — 546 Atwood St.
Longmont Fire Department — 667 4th Ave.
Sandstone Ranch — E of Longmont off CO 119

All 3 ZIP Codes Serving Longmont, CO

Other Cities in Colorado

Denver Aurora Colorado Springs Westminster Lakewood

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