Census tracts · Longmont, CO

Census tracts in Longmont, Colorado

19 census tracts lie mostly within Longmont, and 4 more reach into it, by the 2020 census blocks they share. Median household income runs from $63,438 in Tract 135.05 to $139,400 in Tract 132.14, against $90,671 for Longmont as a whole (ACS 2020-2024 5-year estimates).

Which census tracts of Longmont earn the most and the least?

The five tracts with the highest and the lowest median household income among those mostly within Longmont and with a reliable estimate.

Tract 132.14 $139,400
Tract 135.08 $118,670
Tract 132.11 $117,299
Tract 134.02 $105,520
Tract 133.05 $102,262
Tract 132.15 $71,170
Tract 135.03 $66,645
Tract 134.01 $66,079
Tract 133.02 $65,068
Tract 135.05 $63,438

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

Every census tract in Longmont

Sort by any column; the share column is how much of each tract's land (by 2020 census blocks) lies inside Longmont.

Census tracts in or partly in Longmont, ACS 2020-2024 5-year estimates. Distance and direction from the Census Bureau's internal point of Longmont (2024 Gazetteer), which is not always its downtown

Tract 133.0608013013306	2.0 mi north	Boulder County	4,335±798	$92,041	$478,900	$1,575	100%
Tract 133.0708013013307	1.5 mi northwest	Boulder County	3,625±469	$80,250	$517,500	$1,564	100%
Tract 133.0808013013308	1.0 mi northwest	Boulder County	3,682±434	$74,323	$487,600	$1,854	100%
Tract 135.0308013013503	0.9 mi north	Boulder County	5,110±612	$66,645	$439,400	$1,581	100%
Tract 135.0508013013505	1.9 mi north	Boulder County	4,572±1,002	$63,438	$435,900	$1,448	100%
Tract 135.0708013013507	1.4 mi northeast	Boulder County	3,401±460	$91,750	$469,500	$1,971	100%
Tract 135.0608013013506	2.1 mi northeast	Boulder County	4,696±395	$98,719	$608,200	$2,004	98%
Tract 132.0808013013208	2.5 mi northwest	Boulder County	6,151±525	$93,705	$626,500	$1,869	97%
Tract 133.0508013013305	2.3 mi northwest	Boulder County	5,632±851	$102,262	$498,100	$1,878	96%
Tract 132.1008013013210	1.6 mi southwest	Boulder County	5,946±809	$84,728	$451,900	$1,700	96%
Tract 135.0808013013508	2.3 mi northeast	Boulder County	7,801±669	$118,670	$622,300	$2,180	96%
Tract 134.0108013013401	0.6 mi southeast	Boulder County	3,893±387	$66,079	$433,200	$1,705	95%
Tract 133.0208013013302	0.8 mi west	Boulder County	5,094±615	$65,068	$654,700	$1,678	93%
Tract 134.0208013013402	1.6 mi east	Boulder County	7,796±801	$105,520	$509,700	$2,003	91%
Tract 132.0708013013207	3.2 mi northwest	Boulder County	3,919±380	$90,317	$664,400	$1,826	88%
Tract 132.1508013013215	3.3 mi west	Boulder County	5,192±545	$71,170	$779,200	$1,711	83%
Tract 132.1208013013212	2.4 mi southwest	Boulder County	4,903±480	$102,132	$631,200	$1,993	71%
Tract 132.1108013013211	4.1 mi south	Boulder County	7,101±846	$117,299	$711,600	$2,048	70%
Tract 132.1408013013214	5.1 mi southwest	Boulder County	6,242±1,030	$139,400	$863,300	$2,207	67%
Tract 21.0508123002105	5.3 mi east	Weld County	6,861±704	$119,966	$639,900	$2,081	15%
Tract 132.0108013013201	4.3 mi north	Boulder County	2,076±259	$102,961	$970,200	$1,788	5%
Tract 132.0508013013205	5.6 mi southwest	Boulder County	4,736±496	$155,234	$927,100	$1,414	4%
Tract 20.1008123002010	5.0 mi southeast	Weld County	2,484±382	$88,958	$438,700	$1,667	3%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files · Census block assignment files

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections