This is a list of the National Register of Historic Places listings in Alamosa County, Colorado.

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Alamosa County, Colorado, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in a map.^[1]

There are 15 properties and districts listed on the National Register in the county.

          This National Park Service list is complete through NPS recent listings posted March 22, 2024.^[2]

Current listings

[3]	Name on the Register[4]	Image	Date listed[5]	Location	City or town	Description
1	Alamosa County Courthouse	More images	September 29, 1995 (#95001149)	702 4th St. 37°28′08″N 105°52′02″W / 37.468889°N 105.867222°W / 37.468889; -105.867222 (Alamosa County Courthouse)	Alamosa
2	Alamosa Post Office		July 22, 2009 (#09000544)	703 4th St. 37°28′09″N 105°52′02″W / 37.4693°N 105.867153°W / 37.4693; -105.867153 (Alamosa Post Office)	Alamosa
3	American National Bank Building		April 15, 1999 (#99000446)	500 State Ave. 37°28′05″N 105°51′53″W / 37.468056°N 105.864722°W / 37.468056; -105.864722 (American National Bank Building)	Alamosa
4	Denver and Rio Grande Railroad Depot	More images	February 11, 1993 (#93000034)	610 State St. 37°28′00″N 105°51′53″W / 37.466667°N 105.864722°W / 37.466667; -105.864722 (Denver and Rio Grande Railroad Depot)	Alamosa
5	Denver and Rio Grande Railroad Locomotive No.169		March 12, 2001 (#01000230)	Along Chamber Dr. within Cole Park 37°28′10″N 105°51′45″W / 37.469444°N 105.8625°W / 37.469444; -105.8625 (Denver and Rio Grande Railroad Locomotive No.169)	Alamosa
6	First Baptist Church	More images	May 22, 2005 (#05000425)	408 State Ave. 37°28′08″N 105°51′53″W / 37.468889°N 105.864722°W / 37.468889; -105.864722 (First Baptist Church)	Alamosa
7	Howard Store		February 1, 2006 (#05001597)	8681 Main St. 37°44′47″N 105°52′37″W / 37.746389°N 105.876944°W / 37.746389; -105.876944 (Howard Store)	Hooper
8	Husung Hardware	More images	January 28, 2000 (#00000003)	625 Main St. 37°28′06″N 105°51′57″W / 37.4683°N 105.8658°W / 37.4683; -105.8658 (Husung Hardware)	Alamosa
9	Medano Ranch Headquarters	More images	February 4, 2004 (#03001543)	2.6 miles north of County Road 6N, Medano-Zapata Ranch 37°42′52″N 105°40′55″W / 37.7144°N 105.6819°W / 37.7144; -105.6819 (Medano Ranch Headquarters)	Mosca	A Nature Conservancy-owned historic ranch property located within Great Sand Dunes National Park; access is limited.
10	Mt. Pleasant School	More images	May 3, 2006 (#06000327)	Junction of County Roads 3, S. and 103, S. 37°31′52″N 105°59′01″W / 37.531111°N 105.983611°W / 37.531111; -105.983611 (Mt. Pleasant School)	Alamosa
11	Sacred Heart Catholic Church	More images	July 15, 1998 (#98000855)	727 4th St. 37°28′11″N 105°52′04″W / 37.4697°N 105.8678°W / 37.4697; -105.8678 (Sacred Heart Catholic Church)	Alamosa
12	St. Thomas Episcopal Church	More images	April 22, 2003 (#03000285)	607 4th St. 37°28′10″N 105°51′57″W / 37.469444°N 105.865833°W / 37.469444; -105.865833 (St. Thomas Episcopal Church)	Alamosa
13	Superintendent's Residence, Great Sand Dunes National Monument	More images	November 2, 1989 (#89001761)	State Highway 150 southwest of Mosca 37°43′30″N 105°31′05″W / 37.725°N 105.5181°W / 37.725; -105.5181 (Superintendent's Residence, Great Sand Dunes National Monument)	Mosca	At the entrance gate to the Great Sand Dunes National Park.
14	Trujillo Homestead		February 4, 2004 (#03001544)	Medano-Zapata Ranch 37°44′00″N 105°44′09″W / 37.7333°N 105.7358°W / 37.7333; -105.7358 (Trujillo Homestead)	Mosca	On Nature Conservancy land in or near the Great Sand Dunes National Park; access is limited.
15	Zapata Ranch Headquarters		April 5, 1993 (#93000199)	5303 State Highway 150 37°39′10″N 105°35′33″W / 37.6528°N 105.5925°W / 37.6528; -105.5925 (Zapata Ranch Headquarters)	Mosca	A Nature Conservancy-owned historic ranch property located near the Great Sand Dunes National Park.