Half of Larkfield-Wikiup’s homes were built after 1984
More historic than 9% of U.S. towns · #718 of 847 in California. What drives it
Most of Larkfield-Wikiup was built recently: 0.5% of its homes predate 1940 and the median home dates from 1984. Below: maps from 1940 on and the census since 1990.
On its age, its old homes and the National Register, Larkfield-Wikiup is more historic than 9% of U.S. towns, #718 of 847 in California. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
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HistoryA character grade: shown, never part of Larkfield-Wikiup’s overall grade.
Few California towns list much on the Register (a typical California town has 0.0 per 10,000 residents, the U.S. 2.4), so Larkfield-Wikiup’s 0.0 sits below most of its state (31% of California towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share (±0.7 points) is firm at this size.
Founding year: our sources. 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 →
What stands out about Larkfield-Wikiup’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Wikipedia doesn’t have a history of Larkfield-Wikiup yet. The photos, dates and memories neighbors add here are how it gets written.
Larkfield-Wikiup is a census-designated place, unincorporated area in Sonoma County, California, United States. The population was 8,492 at the 2020 census, down from 8,884 at the 2010 census. It comprises the Mark West area between Santa Rosa (to the south), Windsor (north), Calistoga (east), and Fulton (west). There are at least four schools within the limits of the CDP, including Cardinal Newman High School, John B. Riebli Elementary School, Mark West Elementary, and San Miguel Elementary schools.
Between the 2010 and 2020 censuses its population fell from 8,884 to 8,492 (-4%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Every edition of the U.S. Geological Survey’s map of Larkfield-Wikiup. Tap a year, or press play to watch the town change.
1940Healdsburg sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Larkfield-Wikiup.
People over time
Larkfield-Wikiup, census by census
Between 6,779 and 8,884 people in every census since 1990.
4 censuses, 1990–2020.
U.S. Census Bureau decennial counts, from the census table on Larkfield-Wikiup’s Wikipedia page.
Famous people
Famous people close to Larkfield-Wikiup
Nobody well known was born in Larkfield-Wikiup itself, so here are the best known from just nearby.
Larkfield-Wikiup is more historic than 9% of U.S. towns, #718 of 847 in California. 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.
How old are the homes in Larkfield-Wikiup?
0.5% of Larkfield-Wikiup’s homes were built before 1940 (Census estimate), against a typical 3.4% for a California town; the median home was built in 1984.
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 (1), 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.
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