Review of the most important dates
| 6th century | The arrival of Slavic tribes, Slavic fortifications in Prachov rocks and Cesov |
| after 1250 | Fortification of the Jicin basin at Brada and Velis castles |
| 1291 | The Queen Jitka is the landlord of the Velis demesne with the Stary Jicin (Old Jicin) settlement |
| 1293 | The first record of the town as part of the Queen's possession |
| 1297–1304 | the founding of the town of Jicin, transfer of city rights from Stary Jicin to the new site |
| 1302 | Lev of Konecchlumí gains the town of Jicin and the Brada castle |
| beg. 14th cent. | The Chapel of St. John the Baptist is built as the first bricklayed building in Jicin |
| 1304–14 | Jicin is a royal town |
| 1316 | Jicin pledged by Jan of Luxembourg to Puta of Frydlant |
| 1326 | The Velis demesne and the town of Jicin pledged to Benes of Vartemberg |
| 1337 | Jicin finally sold by Jan of Luxembourg with the consent of Karel Jan of Vartemberg |
| 1348 | Charles IV issues a decree declaring Jicin a hereditary property of the Vartembergs |
| around 1390 | The first large bricklayed building – the Church of St Jacob the Greater |
| 1416 | Cenek of Vartemberg sold the royal city rights to Jicin |
| 1437–52 | Held by Hasek of Valdstejn |
| 1452 | Jiri of Podebrady takes over the demesne and the town, the city rights are confirmed, two annual markets allowed |
| 1480–88 | Late Gothic redesign of the Church of St Jacob the Greater, interrupted by the Hussite wars |
| 1488–1607 | Jicin possessed by the Trcka's of Lipa, becomes the capital of their demesne |
| after 1540 | Beginning of the Late Gothic constructions |
| 1550–78 | New fortification with three towers – Valdicka, Holinska and Prazska (Prague) |
| 1578 | Valdicka tower finished |
| po 1580 | Renaissance constructions |
| 1589 | Large fire in the town |
| Tax redemption for three years | |
| 1605 | Rudolf Trcka confirmed all previous privileges and gives the tax right |
| 1607–20 | Jicin and the Kumburk demesne belong to the Smiricky family |
| 1608 | Renaissance palace constructed |
| 1620 | Argument over the property between Eliska and Marketa Smiřicky, the palace partially demolished in an explosion |
| 1621 | Albrecht of Valdstejn takes over the Kumburk part of Smiricky's demesne |
| 1623 | Jicin becomes Valdstejn's property upon the Imperial resolution |
| Albrecht of Valdstejn appointed the generalissimus (chief commander of the Imperial Army) | |
| Jičín becomes the capital of Frydlant Duchy | |
| 1624 | Nove Mesto ("New Town") founded as the quarter of craftsmen and farmers |
| 1625 | The Duke's palace constructed according to the revised project by Andrea Spezza |
| 1627 | Frydlant Duchy established, Jicin becomes the residential town, the Mint founded in Jicin |
| Albrecht of Valdstejn issues a building decree for the town's construction and redesign | |
| The new Church of St Jacob the Greater constructed according to a plan by Giovanni Pieroni | |
| A. Spezza's project for a Carthousian monastery in Valdice started | |
| 1628 | The Jesuit college and Gymnasium under construction |
| 1630 | Nicolo Sebregondi becomes the leading architect of the Construction Office in Jicin |
| Sebregondi's project for a summer resort with a loggia | |
| 1633 | Urban plan for the town's rebuilding by N. Sebregondi |
| Albrecht of Valdstejn lost the army command | |
| 25.II.1634 | Albrecht Vaclav Eusebius Valdstejn assassinated in Chebu |
| 1634 | Albrecht of Valdstejn's property confiscated |
| 1635 | Rudolf of Tiefenbach becomes the holder of Jicin |
| 1635–48 | Swedish troops break into Jicin |
| 1656 | Jicin inherited by Jan Norbert of Sternberk |
| 1658 | The Jesuit College extended |
| 1661 | The graveyard Church of P. Marie de Sale finished |
| 1681 | Large fire in the town |
| 1684 | The Jesuit Seminar and a hospital built |
| from 1710 | Jicin as part of the Trauttmansdorf demesne |
| 1745 | Prussian troops break into Jicin |
| 1767 | Large fire in the town, Classicist rebuilding |
| 1784 | Jicin becomes the land's administration centre and the seat of authorities and schools |
| 1791 | Start of regular post service |
| 1813 | Building of the roads |
| Anti-Napolean Treaty meeting in Jicin palace | |
| from 1816 | City walls and towers demolished |
| 1829 | National Enlightenment, regional newspaper |
| after 1840 | Late Empire reconstruction |
| after 1850 | Suburbs incorporated |
| Secondary schools established | |
| from 1860 | Local communities established |
| 1861 | The regional museum established |
| 1866 | Austro-Prussian battle of Jicin |
| from 1870 | Industrial development |
| 1871, 1888, 1904 | Railway connection to Hradec Králové, Turnov and Nymburk opened |
| 1919 | Regional gallery built |
| 1920 | Urban regulation plan made |
| 1930 | Urban regulation plan by ing. arch. Cenek Musil |
| 1934 | Valdstejn exhibition |
| 10.V.1945 | Jicin liberated by the Russian army |
| 1956 | Historical centre declared a protected urban area |
| 1958 | Urban regulation and construction plan made |