   thumb|250px|syrmia county and vicinity syrmia county (; ; ; ) was a historic administrative subdivision (Å¾upanija) of the kingdom of croatia-slavonia, kingdom of hungary, austria-hungary. croatia-slavonia was an autonomous kingdom within the lands of the crown of saint stephen (transleithania), the hungarian part of the dual austro-hungarian empire. the territory of the county is currently in eastern croatia (smaller western part) and north-western serbia (larger eastern part). the name syrmia (serbian: srem, croatian: srijem) is still used for the corresponding regions in croatia and serbia. the capital of the county was vukovar. ==geography== syrmia county shared borders with other croatian-slavonian counties of poÅ¾ega and virovitica, the austro-hungarian land of bosnia and herzegovina, the kingdom of serbia, and the hungarian counties of bÃ¡cs-bodrog and torontÃ¡l. the county stretched along the right (southern) bank of the river danube and the left (northern) bank of the river sava, down to their confluence. its area was 6,866&nbsp;kmÂ² around 1910. ==history==  the territory of syrmia county was part of the medieval kingdom of croatia when it entered a personal union with the kingdom of hungary in 1102. according to other sources, it belonged to main part of the kingdom of hungary, outside of the kingdom of croatia.http://lazarus.elte.hu/~mihalyi/proba/hungary%201118.jpg by the 13th 
16th-century_disestablishments 1924_disestablishments Counties_in_the_Kingdom_of_Hungary Former_counties_of_Croatia History_of_Serbia_during_Habsburg_administration History_of_Slavonia History_of_Syrmia History_of_Vojvodina States_and_territories_established_in_the_12th_century States_and_territories_established_in_the_18th_century