One of the counties in the Kingdom of Croatia-Slavonia (an autonomous kingdom within the Hungarian part of Austria-Hungary) was named Modruš-Rijeka County partially after the town.
From 1193 until 1553 Modruš and the large surrounding estate was owned by members of the Frankopan noble family, who were living in the Tržan castle above the medieval settlement.
The diocese was nominally restored in 2000 as Latin Titular bishopric of Modruš (Croatian = Curiate Italian) / Modrussa / Modrussen(sis) (Latin).
It has had the following incumbents, so far of the fitting Episcopal (lowest) rank :
"Population by Age and Sex, by Settlements, 2011 Census: Modruš". Census of Population, Households and Dwellings 2011. Zagreb: Croatian Bureau of Statistics. December 2012. http://web.dzs.hr/Eng/censuses/census2011/results/htm/E01_01_01/e01_01_01_zup04_1724.html ↩