More historic than 4% of U.S. towns · #218 of 253 in Virginia. What drives it
Most of Idylwood was built recently: 1% of its homes predate 1940 and the median home dates from 1975. Below: maps from 1900 on and the census since 1980.
Founding year: the first Idylwood post office (Blevins & Helbock, CC0).
History grade
What drives Idylwood’s History grade
On its age, its old homes and the National Register, Idylwood is more historic than 4% of U.S. towns, #218 of 253 in Virginia. Its National Register listings hold the grade up; its age pulls it down.
D−
HistoryA character grade: shown, never part of Idylwood’s overall grade.
Virginia towns list more on the Register than most of the country (a typical Virginia town has 3.6 per 10,000 residents, the U.S. 2.4), so Idylwood’s 0.0 sits below most of its state (17% of Virginia towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from D− to D. The pre-1940 share (±0.6 points) is firm at this size. The founding year is the first post office, not a stated founding date.
Founding year: the first post office (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 →
What stands out about Idylwood’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Every edition of the U.S. Geological Survey’s map of Idylwood. Tap a year, or press play to watch the town change.
1900Washington 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 Idylwood.
Places that used to be
Lost post offices, old corners and burying grounds
Idylwood had its own post office from 1920 to 1924.
Idylwood
1920–1924
19201970today
Hamlets and corners on the map
AntrimDonna Lee GardensFalls HillPoplar HeightsWestwood Park
2cemeteries and burying grounds inside Idylwood
King David Memorial GardensNational Memorial Park
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
The story so far
Idylwood, in brief
Wikipedia doesn’t have a history of Idylwood yet. The photos, dates and memories neighbors add here are how it gets written.
Idylwood is a census-designated place (CDP) in Fairfax County, Virginia, United States. The population was 17,954 as of the 2020 census. It originally developed as a suburban community along the route of the Washington and Old Dominion Railroad, and later along Virginia State Route 7. The construction of the Capital Beltway in the 1960s, and I-66 and the Orange Line of the Washington Metrorail system in the 1980s, as well as the concurrent development of nearby Tysons Corner into Washington's leading suburban business district, led to the development of several apartment, townhouse, and small-lot single-family housing complexes, as well as the high-rise Idylwood Towers condominium, in the p…
Its first post office opened in 1920. Between the 2010 and 2020 censuses its population grew from 17,288 to 17,954 (+4%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Idylwood, 1900 to 1924
Woven from the archive, old maps, post office records, the National Register and the people born here.
The Idylwood post office opened in 1920, the earliest record of the town by name (U.S. post office records).
How does Idylwood rank for history?
Idylwood is more historic than 4% of U.S. towns, #218 of 253 in Virginia. 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 Idylwood?
1% of Idylwood’s homes were built before 1940 (Census estimate), against a typical 1.9% for a Virginia town; the median home was built in 1975.
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 U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock) 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.
