History · Boulder

Boulder’s history is
mostly unwritten

The public archives hold only 2 old photos of Boulder. The rest are in attics, shoeboxes and the historical society. Help start the collection.

2old images & papers
1historic places
2need a date
Llamafarm · Wikimedia Commons

The story so far

from Wikipedia & the U.S. Census

Boulder is a census-designated place (CDP) in Sublette County, Wyoming, United States. The population was 170 at the 2010 census.

Between the 2010 and 2020 censuses its population fell from 170 to 115 (-32%).

Wikipedia doesn’t have a history of Boulder yet — the old photos, dates and memories neighbors add here are how it gets written.

Intro from Wikipedia, licensed CC BY-SA 4.0. Population and housing: U.S. Census Bureau.

Be one of the first

Start Boulder’s collection

The first neighbors to add old photos shape how Boulder’s history is told.

0 of 10 decades since 1900 have photos 🗓️Date a photo2 archive items have no date+2 🔁Retake an old viewLlamafarm: stand where they stood+15 📦Share a family photoSign in to add one+10

Famous people close to Boulder

See all 2 →
By decade

Boulder, decade by decade

Before
2000
No old photos in the archives yetWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
📷 Add from your album
National Register of Historic Places

1 historic place in Boulder

1 place in Boulder is on the National Register of Historic Places, the country’s official list of buildings and places worth saving.

#48
In Wyomingby listings · most towns there have none
1place listed1 other
0National Historic LandmarksNone here yet
0historic buildings protectedcounting each building in a district
1985first listedDDZ Bridge over New Fork River

Where they are

Tap a dot for a photo and link. Districts show at their center.
Structures

When they were listed

The Register began in 1966.
National Park Service, National Register of Historic Places (05/22/2026) · styles from the National Archives catalog · photos from Wikimedia Commons, credited on each place

Then & now

No then-and-now pairs yet. Take a photo from the same spot as Llamafarm and it appears here side by side.

🔁 Retake this view · +15

Stories next door

nearby towns’ history

From Wikimedia Commons (4), the Library of Congress (1) and the National Register (1). Images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.

The coffee’s on

Where to, neighbor?

You’re in Boulder, WYView boundary

Nearby

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Boulder is your selected town. The feed includes posts assigned to this town, not a distance radius or ZIP code.

Neighborhoods narrow the feed further, while townwide announcements, events, and issues remain visible.

Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/19 · 2025-01-01