Illerkirchberg: A Historic Town in Baden-Württemberg
Nestled on the border of Bavaria within the state of Baden-Württemberg, Illerkirchberg is a municipality that blends ancient Roman heritage with the legacy of one of Europe's most famous banking families. Located in the Alb-Donau-Kreis district, this town offers a glimpse into the strategic and political shifts that shaped Southern Germany over two millennia.
Key Facts
- Location: Alb-Donau-Kreis district, Baden-Württemberg, Germany.
- Population: 5,036 (as of December 31, 2024).
- Historical Significance: Site of a Roman castrum (military camp) and the former seat of the counts of Kirchberg.
- Notable Connection: Once owned by the financier Jakob Fugger.
- Geography: Total area of 11.45 km², with elevations ranging from 480 m to 510 m.
Ancient Roots and Roman Influence
The history of the region begins in Unterkirchberg (Lower Kirchberg). Around 40 AD, a castrum—a Roman military camp—was established here. This fortification was a critical component of the Upper Germanic-Rhaetian Limes, a frontier system designed to secure the vital road running along the south shore of the Danube river.

The Rise and Fall of the Counts of Kirchberg
Moving to Oberkirchberg (Upper Kirchberg), records from 1087 identify it as the seat of the counts of Kirchberg. This noble line held influence until they became extinct in 1519. Before the line ended, the county had transitioned through several owners, being sold first to Bavaria and subsequently to Austria.
The Fugger Era
In 1507, Emperor Maximilian I sold the county to Jakob Fugger for 50,000 guilders. This acquisition included the adjacent lordships of Weißenhorn, Wullenstetten, and Pfaffenhofen (Roth). Fugger continued to expand his holdings, acquiring Schmiechen in 1508 and the lordship of Biberbach in 1514.
To protect his business interests from the interference of local nobility, the Emperor granted Jakob Fugger the title of Imperial Count in 1514. Throughout his life, Fugger became the lord of more than 50 smaller villages. In 1767, the Fugger family commissioned architect Franz Anton Bagnato to build a new castle, which served as the seat for the Kirchberg branch of the family. Today, the castle is owned by Countess Maria-Elisabeth von Thun und Hohenstein.
Political Transitions and Modern Administration
The political landscape of Illerkirchberg shifted frequently during the Napoleonic era. The county returned to Bavarian control between 1805 and 1810, before being sold to the Kingdom of Württemberg. Today, it remains a part of Baden-Württemberg, situated directly on the border with Bavaria.
Currently, the municipality is led by Mayor Markus Häußler (serving 2020–2028) and is managed within the administrative region of Tübingen.
Town Overview and Statistics
| Category | Detail |
|---|---|
| State / District | Baden-Württemberg / Alb-Donau-Kreis |
| Total Area | 11.45 km² (4.42 sq mi) |
| Population Density | 439.8/km² (1,139/sq mi) |
| Elevation Range | 480 m to 510 m |
| Postal / Dialling Code | 89171 / 07346 |
| Vehicle Registration | UL |
Frequently Asked Questions
What is the historical significance of Unterkirchberg?
Unterkirchberg is significant for having hosted a Roman castrum built around 40 AD, which served as part of the Upper Germanic-Rhaetian Limes to protect the road along the south shore of the Danube.
Who was Jakob Fugger and how is he linked to Illerkirchberg?
Jakob Fugger was a prominent financier and Imperial Count who purchased the county of Kirchberg from Emperor Maximilian I in 1507 for 50,000 guilders, eventually becoming the lord of numerous villages in the area.
Who designed the Fugger family castle?
The new castle, built in 1767 to serve as the seat of the Kirchberg branch of the Fugger family, was designed by architect Franz Anton Bagnato.
Which state does Illerkirchberg belong to today?
Illerkirchberg is currently part of the state of Baden-Württemberg, although it is located on the border of Bavaria.
What is the current population of the municipality?
As of December 31, 2024, the total population of Illerkirchberg is 5,036.