Infobox settlement | official_name = Ilulissat | other_name = Jakobshavn | image_skyline = | image_caption = From upper left: Illumiut neighbourhood, Old town, Ilulissat Icefjord, Knud Rasmussen's Museum, Zion's Church | image_flag = Flag of Ilulissat.svg | blank_flag_type = | blank_flag_size = | image_blank_emblem = | blank_emblem_type = Coat of arms | blank_emblem_size = 100px | blank_emblem_link = Avannaata | pushpin_map = Greenland#North Atlantic#Arctic | pushpin_relief = yes | pushpin_label_position = | pushpin_map_caption = Location within Greenland | pushpin_mapsize = | image_map= | image_map1= | image_shield = Coat of arms Ilulissat.svg | shield_size = | subdivision_type = Sovereign state | subdivision_name = | subdivision_type1 = Autonomous territory | subdivision_name1 = | subdivision_type2 = Municipality | subdivision_name2 = Avannaata | established_title = First mention | established_date = 15th century | established_title1 = City Status | established_date1 = 16th century | area_total_km2 = 11.25 | area_metro_km2 = 47.00 | area_footnotes = | population_footnotes = | population_as_of = 2020 (city, settlements) | population_total = 4670 | population_blank2_title = Ethnicity | population_blank2 = 90.98% Greenlandic9.02% OtherNaatsorsueqqissaartarfik: Naatsorsueqqissaartarfik, table BEDST3', period 2014 | population_density_km2 = auto | population_urban = 4,491 (City of Ilulissat) | population_metro = 342 (Settlements: Ilimanaq, Oqaatsut, Qeqertaq and Saqqaq) | population_density_metro_km2 = 103.5 | timezone = WGT | utc_offset = -3 | timezone_DST = WGST | utc_offset_DST = -2 | elevation_min_m = 1 | elevation_max_m = 2010 | area_code = (+299) 94 | postal_code_type = Postal code | postal_code = 3952 | coordinates = | coordinates_footnotes = | website = Ilulissat, formerly Jakobshavn or Jacobshaven, is the municipal seat and largest town of the Avannaata municipality in western Greenland, located approximately north of the Arctic Circle.