List of states in the Holy Roman Empire (U)

Name	Type	Circle	Bench	Formed	Notes
Überlingen	Imperial City	Swab	SW	1268	1803: Mediatized to Baden
Ulm	1155: Free Imperial City	Swab	SW	1115	1803: Mediatized to Bavaria 1809: To Wurttemberg
Umpfenbach	Lordship 1805: HRE Princely County				To Trauttmansdorff
Unterwalden	Imperial valley			1415	Division into Nidwalden and Obwalden 1173: To Counts of Habsburg 1291: Nidwalden became a founding member of the Swiss League 1324: Immediate Imperial fief (Reichsunmittelbar) 1350s: Division into Obwalden and Nidwalden 1648: Left Empire as member of Swiss Confederation
20px Upper Salm	1163: County			1170	Partitioned from Salm 1499: Raised to Wild- and Rhinegraves of Salm 1574: Divided into Salm-Salm and Salm-Grumbach
20px Upper Bavaria (Oberbayern)	Duchy			1255
Upper Schönburg	County	Upp Sax		1569	Partitioned from Schönburg 1800: Partitioned into Schönburg-Hartenstein and Schönburg-Waldenburg
20px Urach	County				1060: 1st mention of Urach 1080: 1st use of "Count of Urach" Division of territory into Achalm and Urach 1218 Egino I of Urach inherited County of Freiburg from Zahringen 1261: Counts of Urach died out 1251-1265: Ulrich I of Wurttemberg acquired territories of Counts of Urach
Uri	Imperial valley			1231	Split off from Habsburg 1648: Left Empire as member of Swiss Confederation
Ursberg	1143: HRE Abbey	Swab			1803; Secularized
Utrecht	Bishopric	Burg	EC	1024	1512: Burgundian Circle 1528: Secularized to Austria 1793: Council of Princes
Uznach	County