Each edition grades its towns against each other only.
More historic than 2% of U.S. towns · #70 of 73 in New Mexico. What drives it
Most of Rio Rancho was built recently: 0.7% of its homes predate 1940 and the median home dates from 2000. Below: 1 old photo or paper, maps from 1934 on, and the census since 1980.
Rio Rancho dates its founding to 1961 (Wikidata). The census first counted it in 1980.
More historic than 2% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Rio Rancho is more historic than 2% of U.S. towns, #70 of 73 in New Mexico. Its National Register listings hold the grade up; its age pulls it down.
Among the 400 U.S. cities of 100,000 or more, Rio Rancho ranks #388 on History.
New Mexico towns list about as much on the Register as the country (a typical New Mexico town has 2.2 per 10,000 residents, the U.S. 2.4), so Rio Rancho’s 0.0 sits below most of its state (28% of New Mexico towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
Newer cities are common at Rio Rancho’s size: in the typical U.S. city of 100,000 or more, 5% of homes predate 1940.
Founding year: Wikidata (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how Rio Rancho’s history is told.
From Wikipedia’s history of Rio Rancho.
The great majority of the territory of Rio Rancho was originally part of the Town of Alameda Grant, which was founded by Spanish colonial settlers in 1710. It was acquired by the United States in 1848, after it defeated Mexico in the Mexican-American War. (Mexico had been independent of Spain since 1821.) The ranches were used for cattle and sheep.
Text from Wikipedia, licensed CC BY-SA 4.0.
Woven from the archive, old maps, post office records, the National Register and the people born here.
On the mapFirst mapped by the U.S. Geological Survey
Born hereAlan Branch is born here
In the archiveEl Camino Real - Byway Signage on the El Camino RealOne decade in the archive so far: the 1990s. Scroll each row; tap a photo for its story.
2025Rio Rancho City Council (Updated 2025)
2025528 Highway
2024Sandia Mountains sunset
2024Sandia Mountains sunset (cropped)1
2024Sandia Mountains sunset (cropped)
2024Race and ethnicity 2020
2023Stormy new mexico
2023Rio Rancho welcome sign NM 2023-10-15 10-37-10
2023Pretty purple desert flower
2019UPS Delivery in the rain
2014Parsons Field - Rio Rancho Sports Complex
2014Looking West on Unser Blvd
2014Hesperaloe parviflora
2014Defined Fitness
2013NM 347 northbound
2012Rio Rancho Sprawl
2012Fall Selling, as it has alway been, Sandia Mountains …
2011Rio Rancho Population Growth
2011Intel in
2009Roadside Memorial
2008Happy-camper-nm-usa
2004NMMap-doton-RioRanchoEvery edition of the U.S. Geological Survey’s map of Rio Rancho. Tap a year, or press play to watch the town change.
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Rio Rancho.
Grew from 9,985 people in 1980 to 104,046 in 2020, more than tenfold.
5 censuses, 1980–2020.
U.S. Census Bureau decennial counts, from the census table on Rio Rancho’s Wikipedia page.
Writers, athletes, leaders and more, ranked by how widely they’re known.
Old hamlets and crossroads still carry their names on the map.
Places and cemeteries from the USGS Geographic Names Information System (2021).
Each neighbor’s History grade, on the same three inputs.
In 1961, according to Wikidata. the census of 1980 counted 9,985 people here.
Rio Rancho is more historic than 2% of U.S. towns, #70 of 73 in New Mexico. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
0.7% of Rio Rancho’s homes were built before 1940 (Census estimate), against a typical 2.3% for a New Mexico town; the median home was built in 2000.
What the archives can’t tell you, neighbors can.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021).
From Wikimedia Commons (23), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
