ZIP Codes Near 80503 — Longmont, CO

There are 48 ZIP codes within 25 miles of 80503, covering 33 cities and towns. Distances are straight-line between ZIP centroids, not driving distance.

Cities within 25 miles

City	Distance	ZIP codes
Niwot, CO	4.9 mi	1
Longmont, CO	5.6 mi	2
Boulder, CO	8.4 mi	6
Berthoud, CO	10.3 mi	1
Jamestown, CO	10.5 mi	1
Lyons, CO	10.7 mi	1
Mead, CO	11.9 mi	1
Lafayette, CO	12.3 mi	1
Erie, CO	12.8 mi	1
Loveland, CO	14.8 mi	2
Firestone, CO	15.0 mi	1
Dacono, CO	15.0 mi	1
Louisville, CO	15.3 mi	1
Frederick, CO	15.7 mi	1
Broomfield, CO	17.0 mi	3
Ward, CO	17.3 mi	1
Eldorado Springs, CO	17.5 mi	1
Johnstown, CO	18.2 mi	1
Pinecliffe, CO	19.7 mi	1
Allenspark, CO	19.8 mi	1
Denver, CO	20.7 mi	3
Arvada, CO	20.9 mi	4
Platteville, CO	21.3 mi	1
Thornton, CO	21.3 mi	1
Brighton, CO	21.3 mi	1
Nederland, CO	21.8 mi	1
Drake, CO	21.8 mi	1
Fort Lupton, CO	22.0 mi	1
Westminster, CO	22.1 mi	1
Milliken, CO	22.3 mi	1
Gilcrest, CO	23.8 mi	1
Golden, CO	24.0 mi	1
Fort Collins, CO	24.4 mi	2

All 48 ZIP codes, by distance

ZIP	City	County	Distance
80544	Niwot, CO	Boulder	4.9 mi
80501	Longmont, CO	Boulder	5.6 mi
80301	Boulder, CO	Boulder	8.4 mi
80504	Longmont, CO	Weld	9.3 mi
80304	Boulder, CO	Boulder	9.6 mi
80513	Berthoud, CO	Larimer	10.3 mi
80455	Jamestown, CO	Boulder	10.5 mi
80540	Lyons, CO	Boulder	10.7 mi
80310	Boulder, CO	Boulder	11.7 mi
80542	Mead, CO	Weld	11.9 mi
80026	Lafayette, CO	Boulder	12.3 mi
80302	Boulder, CO	Boulder	12.4 mi
80516	Erie, CO	Weld	12.8 mi
80305	Boulder, CO	Boulder	13.4 mi
80303	Boulder, CO	Boulder	13.5 mi
80537	Loveland, CO	Larimer	14.8 mi
80520	Firestone, CO	Weld	15.0 mi
80514	Dacono, CO	Weld	15.0 mi
80027	Louisville, CO	Boulder	15.3 mi
80530	Frederick, CO	Weld	15.7 mi
80023	Broomfield, CO	Broomfield	17.0 mi
80481	Ward, CO	Boulder	17.3 mi
80025	Eldorado Springs, CO	Boulder	17.5 mi
80020	Broomfield, CO	Broomfield	17.9 mi
80534	Johnstown, CO	Weld	18.2 mi
80471	Pinecliffe, CO	Boulder	19.7 mi
80510	Allenspark, CO	Boulder	19.8 mi
80021	Broomfield, CO	Jefferson	19.8 mi
80234	Denver, CO	Adams	20.7 mi
80007	Arvada, CO	Jefferson	20.9 mi
80651	Platteville, CO	Weld	21.3 mi
80241	Thornton, CO	Adams	21.3 mi
80602	Brighton, CO	Adams	21.3 mi
80538	Loveland, CO	Larimer	21.7 mi
80466	Nederland, CO	Boulder	21.8 mi
80515	Drake, CO	Larimer	21.8 mi
80621	Fort Lupton, CO	Weld	22.0 mi
80031	Westminster, CO	Adams	22.1 mi
80543	Milliken, CO	Weld	22.3 mi
80005	Arvada, CO	Jefferson	22.4 mi
80233	Denver, CO	Adams	23.2 mi
80260	Denver, CO	Adams	23.4 mi
80623	Gilcrest, CO	Weld	23.8 mi
80403	Golden, CO	Jefferson	24.0 mi
80526	Fort Collins, CO	Larimer	24.4 mi
80003	Arvada, CO	Jefferson	24.8 mi
80528	Fort Collins, CO	Larimer	24.9 mi
80004	Arvada, CO	Jefferson	24.9 mi

How this list is calculated

Each ZIP code is represented by a single centroid point, and distance is measured great-circle from the centroid of 80503 to each of the others. Two consequences worth knowing about:

Large rural ZIPs distort the picture. A ZIP covering 400 square miles has a centroid that may be 15 miles from its own nearest edge, so a code listed as 30 miles away can begin much closer.
These are not driving distances. A river, a bay, or a mountain range makes a 12-mile straight line into a 40-minute drive. For service-area planning, use this as a first cut and check the routes.

If you need this programmatically — for a store locator, a delivery zone, or a territory map — the radius endpoint returns the same data as JSON, with an arbitrary radius and optional state filtering.

Back to 80503

County, time zone, area codes, and the full ZIP+4 lookup for any address in Longmont.

ZIP code 80503 Radius API