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St. Mary's, ColoradoPhoto: Jeffrey Beall · CC BY 4.0
–Not graded
History · St. Mary's

Half of St. Mary's’ homes were built after 1985

Most of St. Mary's was built recently: 0.0% of its homes predate 1940 and the median home dates from 1985. Below: maps from 1910 on and the census since 2000.

0on the National Register
0.0%homes built before 1940
Add an old photoShare a memory
Photo: Jeffrey Beall · CC BY 4.0

What stands out about St. Mary's’ past

Read from the archive, the National Register and the record. The page puts what stands out first.

A history waiting to be writtenNo old photos of St. Mary's are in the public archives yet. The rest are in attics and albums.On the map since 19103 editions of the USGS map, 1910 to 1974. Watch St. Mary's change.
★ What stands out · Help out

Start St. Mary's’s collection

The first neighbors to add old photos shape how St. Mary's’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
Share a family photoSign in to add one+10
On the map

St. Mary's on the map, 1910 to 1974

Every edition of the U.S. Geological Survey’s map of St. Mary's. Tap a year, or press play to watch the town change.

St. Mary's on the 1910 USGS mapSt. Mary's on the 1958 USGS mapSt. Mary's on the 1974 USGS map1910Central City 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 St. Mary's.

The story so far

St. Mary's, in brief

Wikipedia doesn’t have a history of St. Mary's yet. The photos, dates and memories neighbors add here are how it gets written.

St. Mary's or Saint Mary's is a census-designated place (CDP) located in and governed by Clear Creek County, Colorado, United States. The CDP is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. The population of the St. Mary's CDP was 333 at the United States Census 2020. The St. Mary's Glacier Metropolitan District and the St. Mary's Glacier Water & Sanitation District provide services. The Idaho Springs post office (Zip Code 80452) serves the area.

Between the 2010 and 2020 censuses its population grew from 283 to 333 (+18%).

Intro from Wikipedia. Population: U.S. Census Bureau.

By decade

St. Mary's, decade by decade

Today3 recent
St. Mary's, Colorado2021St. Mary's, ColoradoSt. Mary's Glacier welcome sign2021St. Mary's Glacier welcome signSilver Lake (Colorado)2021Silver Lake (Colorado)
People over time

St. Mary's, census by census

010020030020002020Peak: 333

Between 251 and 333 people in every census since 2000.

3 censuses, 2000–2020.

U.S. Census Bureau decennial counts, from the census table on St. Mary's’ Wikipedia page.

Famous people

Famous people close to St. Mary's

Nobody well known was born in St. Mary's itself, so here are the best known from just nearby.

See all →
Arthur HoytAmerican film actor · b. 1874
J
Jake CanterAmerican snowboarder · b. 2003
Eric StoughAmerican animator and producer · b. 1972
Noah HoffmanAmerican cross-country skier · b. 1989
Joseph H. AugustAmerican cinematographer and co-founder of the … · b. 1890
Griffin DorseyAmerican soccer player · b. 1999
Places that used to be

Old corners and places now gone

Old hamlets and crossroads still carry their names on the map.

Hamlets and corners on the map
Saint Marys
Gone or out of use
Alice MinemineArizona Jim MinemineCommercial Union MinemineGlory HolemineGold Anchor Minemine

Places and cemeteries from the USGS Geographic Names Information System (2021).

Questions about St. Mary's’ history

Memory lane

What the archives can’t tell you, neighbors can.

Town Square →
Start a conversation
Sources

Where this page comes from

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). How TownRatings grades history →

From Wikimedia Commons (3), 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.