Trmice (German: Türmitz) is a town in Ústí nad Labem District in the Ústí nad Labem Region of the Czech Republic. It has about 3,400 inhabitants.

The villages of Koštov and Újezd are administrative parts of Trmice.

Trmice is located southwest of Ústí nad Labem, in its immediate vicinity. It lies on the border between the Most Basin and Central Bohemian Uplands. The highest point is the hill Jizerský vrch at 454 m (1,490 ft) above sea level. The Bílina River flows through the town. A small part of Lake Milada extends into the territory of Trmice.

In the 13th century, there was a fortress in Trmice. In the first half of the 17th century, it was rebuilt into a Baroque castle. The Old Castle was repaired in 1926, but it was demolished in 1965 due to considerable dilapidation.

Between 1939 and 1993, Trmice was a borough of Ústí nad Labem. Since 1 January 1994, it has been a separate municipality again.

Historical population

Year Pop. ±% 1869 2,212 —     1880 2,892 +30.7% 1890 3,756 +29.9% 1900 5,119 +36.3% 1910 6,659 +30.1%	Year Pop. ±% 1921 7,969 +19.7% 1930 8,522 +6.9% 1950 5,945 −30.2% 1961 5,982 +0.6% 1970 4,950 −17.3%	Year Pop. ±% 1980 3,957 −20.1% 1991 1,824 −53.9% 2001 2,691 +47.5% 2011 2,967 +10.3% 2021 3,097 +4.4%
Source: Censuses

The D8 motorway, which connects Prague with Ústí nad Labem, passes through the town.

The New Castle, also called Trmice Castle, is the main landmark of the town. It was designed by Heinrich von Ferstel and built in the Gothic Revival style in 1856–1863. Today it serves as a cultural centre, and as a museum with permanent exhibitions on the history of regional mining and industry and a model railway museum.

• Hermann Burghart (1834–1901), Austrian scenic designer and set decorator

Trmice is twinned with:

• Königstein, Germany

• Official website