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BHistory
History · Thiensville

Thiensville’s post office opened in 1883, and 2 of its places are on the National Register

More historic than 60% of U.S. towns · #160 of 362 in Wisconsin. What drives it

Most of Thiensville was built recently: 10% of its homes predate 1940 and the median home dates from 1964. 2 places in town are on the National Register, among them two historic districts with 21 buildings between them. Below: 6 old photos and papers, maps from 1892 on, and the census since 1920.

1883first post office
2on the National Register
10%homes built before 1940
6old photos & papers
1famous people
From Thiensville’s archive · credits on each photo
Quick answers

How Thiensville began

When was Thiensville founded?

1883

The Thiensville post office opened in 1883, the earliest record of the town by name. Another post office, Mequon (1882), opened inside today’s town and later closed.

First census: 334 in 19202020 census: 3,290143 years

How historic is Thiensville?

B

More historic than 60% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
Founding year: the first Thiensville post office (Blevins & Helbock, CC0).The full story ↓
History grade

What drives Thiensville’s History grade

On its age, its old homes and the National Register, Thiensville is more historic than 60% of U.S. towns, #160 of 362 in Wisconsin. Its National Register listings hold the grade up; its age pulls it down.

B
HistoryA character grade: shown, never part of Thiensville’s overall grade.
All U.S. towns we grade (21,289)Ahead of 60%
NewerOlder
Wisconsin towns of 2,500+ (362)Ahead of 56%

Wisconsin towns list more on the Register than most of the country (a typical Wisconsin town has 3.0 per 10,000 residents, the U.S. 2.4), so Thiensville’s 63.7 sits above most of its state (91% of Wisconsin towns have fewer) while its 21 historic buildings outnumber those of 80% of U.S. towns.

How sure. Graded on any two of the three inputs instead, the letter would range from C to B+. The pre-1940 share is a Census survey estimate (±4.7 points). 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 Thiensville’s past

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

★ What stands out · On the map

Thiensville on the map, 1892 to 1971

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

Thiensville on the 1892 USGS mapThiensville on the 1901 USGS mapThiensville on the 1958 USGS mapThiensville on the 1971 USGS map1892Milwaukee 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 Thiensville.

Every building

Thiensville, building by building, 1893–1929

Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.

Thiensville fire insurance map, 1893, sheet 11893Sheet 1 of 1
Edition
Sheets
BrickWoodStone

Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.

The story

How Thiensville came to be

From Wikipedia’s history of Thiensville.

Read it all →

In the early 19th century, the Potawatomi lived on the west bank of the Milwaukee River and had a village in present-day Thiensville, located on Pigeon Creek, north of Freistadt Road. They surrendered their land to the United States federal government through the 1833 Treaty of Chicago, which was ratified in 1835 and required them to leave the area by 1838.

Text from Wikipedia, licensed CC BY-SA 4.0.

Timeline

Thiensville, 1868 to 1933

Woven from the archive, old maps, post office records, the National Register and the people born here.

  1. 19th century
  2. 1868Born hereBertha E. Reynolds is born here
  3. 1882Post officeThe Mequon post office opens
  4. 1883Post officeThe Thiensville post office opens
  5. 1892On the mapFirst mapped by the U.S. Geological Survey
  6. 20th century
  7. 1906Post officeThe Mequon post office closes
  8. 1933In the archiveFRONT (WEST) AND SOUTH SIDE, PERSPECTIVE VIEW - Thiensville Village Hall, 101 Green Bay R…
By decade

Thiensville, decade by decade

One decade in the archive so far: the 1930s. Scroll each row; tap a photo for its story.

Then & now

Stand where they stood

No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.

FRONT (WEST) AND SOUTH SIDE, PERSPECTIVE VIEW - Thiensville Village Hall, 101 Green Bay Road
Retake this viewFRONT (WEST) AND SOUTH SIDE, PERSPECTIVE VIEW - Thiensville Village Hall, 101 Green Bay Road, 1933

Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Thiensville’s page.

Retake this view · +15
On the National Register

2 listings protect 21 historic buildings

The country’s official list of buildings and places worth saving.

places listed
2
National Historic Landmarks
0
none yet
historic buildings protected
21
each building in a district counts
first listed
2004
Green Bay Road Historic District
Districts

Architectural styles listings

Queen Anne2
Late 19th and Early 20th Century American Movements1

National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.

People over time

Thiensville, census by census

05001,0001,5002,0002,5003,0003,500192019401960198020002020Peak: 3,341

Between 334 and 3,341 people in every census since 1920.

11 censuses, 1920–2020.

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

Places that used to be

Lost post offices and old corners

Thiensville’s post office has been open since 1883. Another post office, Mequon, opened and closed inside today’s town.

Mequon
1882–1906
Thiensville
1883–today
18801950today
Hamlets and corners on the map
Mequon

US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).

Help out

Finish Thiensville’s story

Most archives stop around 1920. The photos from after that are in family albums, not libraries.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
1 of 10 decades. The empty ones are waiting for someone’s album.

Questions about Thiensville’s history

What year was Thiensville founded?

The Thiensville post office opened in 1883, the earliest record of the town by name (U.S. post office records).

How does Thiensville rank for history?

Thiensville is more historic than 60% of U.S. towns, #160 of 362 in Wisconsin. 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.

What is on the National Register in Thiensville?

Two places: the Green Bay Road Historic District (listed 2004) and the Main Street Historic District (2004).

How old are the homes in Thiensville?

10% of Thiensville’s homes were built before 1940 (Census estimate, ±4.7 points), against a typical 12% for a Wisconsin town; the median home was built in 1964.

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).

From Wikimedia Commons (6), the National Register of Historic Places (2), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.