List of states in the Holy Roman Empire (I)

This is a list of states in the Holy Roman Empire beginning with the letter I:

Name	Type	Imperial circle	Imperial diet	History
Inner Austria	Duchy			1379: Partitioned from Austria 1406: Annexed to Austria
Irsee	Abbacy	Swab	SP	1186: Formed 1695: Imperial immediacy 1802: To Bavaria
Isenberg-Limburg	County	n/a	n/a	1253: Renamed from Altena-Isenberg 1289: Acquired Altenhof and Styrum 1304: Partitioned into Limburg-Hohenlimburg and Limburg-Styrum
Isenburg HRE Prince of Isenburg	Lordship	n/a	n/a	11th Century: Counts of the Niederlahngau assumed the name Isenburg though without comital rank 1129: Acquired Kobern 1137: Partitioned into Isenburg-Kobern and Isenburg-Isenburg 1197: Rembold IV acquired Kempenich, founding Isenburg-Kempenich c1100: Division into Isenburg-Limburg and Isenburg-Kempenich 1137: Partitioned into Isenburg-Isenburg and Isenburg-Limburg-Covern 1673: Division into Isenburg, Birstein, Isenburg-Marienborn, Isenburg-Meerholz, Isenburg-Wachtersbach 1806: Joined Confederation of the Rhine
Isenburg-Arenfels	Lordship	n/a	n/a	c. 1280: Partitioned from Isenburg-Cleeberg 1371: Extinct; to Isenburg-Isenburg
Isenburg-Birstein	County 1744: Principality	Upp Rhen	WT	1511: Partitioned from Isenburg-Büdingen 1628: Partitioned into Isenburg-Offenbach and Isenburg-Büdingen 1685: Partitioned from Isenburg-Offenbach 1744: HRE Prince 1803: Bench of Princes 1806: Renamed to Principality of Isenburg and mediatised the other branches of the House of Isenburg 1815: To the Grand Duchy of Hesse; renamed to Ysenburg and Büdingen
Isenburg-Braunsberg	Lordship	n/a	n/a	c. 1175: Partitioned from Isenburg-Isenburg 1243: Renamed to Isenburg-Wied after inheriting Wied
Isenburg-Büdingen	Lordship 1442: County	n/a	n/a	1341: Partitioned from Isenburg-Cleeberg 1442: HRE Count 1511: Partitioned into Isenburg-Rönneburg and Isenburg-Birstein 1628: Partitioned from Isenburg-Birstein 1673: Partitioned into itself, Isenburg-Wächtersbach, Isenburg-Meerholz and Isenburg-Marienborn 1806: To Isenburg-Birstein 1815: To the Grand Duchy of Hesse
Isenburg-Cleeberg (Isenburg-Cleberg)	Lordship	n/a	n/a	c. 1158: Partitioned from Isenburg-Kobern 1221: Acquired Limburg an der Lahn 1258: Partitioned into itself and Isenburg-Limburg c. 1280: Partitioned into Isenburg-Arenfels and itself 1304: Acquired Büdingen 1310: Acquired Grenzau 1341: Partitioned into Isenburg-Büdingen and Isenburg-Grenzau
Isenburg-Eisenberg	County	n/a	n/a	1685: Partitioned from Isenburg-Offenbach 1758: Extinct; to Isenburg-Birstein
Isenburg-Grenzau	Lordship	n/a	n/a	1341: Partitioned from Isenburg-Cleeberg 1439: Extinct; to Nassau-Beilstein 1446: To the Archbishopric of Trier 1460: To Isenburg-Isenburg (Lower Isenburg)
Isenburg-Grenzau	Lordship	n/a	n/a	1502: Partitioned from Isenburg-Isenburg (Lower Isenburg) 1664: Extinct; divided between the Archbishoprics of Cologne and Trier and Fulda Abbey, with the latter granting their share of the territory to Walderdorff
Isenburg-Isenburg (Lower Isenburg)	Lordship	n/a	n/a	1137: Partitioned from Isenburg c. 1175: Partitioned into itself and Isenburg-Braunsberg 1197: Acquired Kempenich c. 1220: Partitioned into itself and Isenburg-Kempenich 1460: Acquired Grenzau 1497: Acquired Neumagen 1502: Partitioned into Isenburg-Grenzau and Isenburg-Neumagen
Isenburg-Kempenich	Lordship	n/a	n/a	1277: Made fief of the Archbishopric of Trier 1424: Extinct; to Schöneck
Isenburg-Kobern (Isenburg-Covern)	Lordship	n/a	n/a	1137: Partitioned from Isenburg c. 1158: Partitioned into itself and Isenburg-Cleeberg 1195: Made fief of the Archbishopric of Trier 1266: Extinct; to Neuerburg
Isenburg-Limburg	Lordship	n/a	n/a	1258: Partitioned from Isenburg-Cleeberg 1406: Extinct; to the Archbishopric of Trier
Isenburg-Marienborn	Lordship 1442: County	Upp Rhen	n/a	1673: Partitioned from Isenburg-Büdingen 1725: Extinct; divided between Isenburg-Büdingen, Isenburg-Wächtersbach and Isenburg-Meerholz
Isenburg-Meerholz	Lordship 1442: County	Upp Rhen	n/a	1673: Partitioned from Isenburg-Büdingen 1806: To Isenburg-Birstein 1815: To the Grand Duchy of Hesse
Isenburg-Neumagen	Lordship	n/a	n/a	1502: Partitioned from Isenburg-Isenburg (Lower Isenburg) 1554: Extinct; to Sayn-Wittgenstein
Isenburg-Offenbach	County	Upp Rhen	n/a	1628: Partitioned from Isenburg-Birstein 1685: Partitioned into Isenburg-Philippseich, Isenburg-Birstein and Isenburg-Eisenberg
Isenburg-Philippseich	County	Upp Rhen	n/a	1685: Partitioned from Isenburg-Offenbach 1718: Extinct; given as an appanage to his nephew William Maurice II, Count of Isenburg-Philippseich without imperial immediacy nor representation in the imperial diet
Isenburg-Rönneburg	County	Upp Rhen	n/a	1511: Partitioned from Isenburg-Büdingen 1601: Extinct; to Isenburg-Birstein
Isenburg-Wächtersbach	Lordship 1442: County	Upp Rhen	n/a	1673: Partitioned from Isenburg-Büdingen 1806: To Isenburg-Birstein 1815: To the Grand Duchy of Hesse
Isenburg-Wied	County	n/a	n/a	1243: Renamed from Isenburg-Braunsberg after inheriting Wied 1462: Extinct; to Runkel
Isny im Allgäu	Imperial City	Swab	SW	1365: Free Imperial City 1803: To Quadt 1806: To Württemberg
Istria	Margraviate	n/a	n/a	1040: Given to Poppo of Weimar-Orlamünde, also of Carniola 1173: To Andechs-Meran 1209: To the Patriarchate of Aquileia 13th Century: Most to Venice 1374: To Austria as mediate province through Carniola 1420: Rest of Istria to Venice 1797: Venetian parts to Austria 1805: To Italy 1815: To Austria
Itter	Lordship