city in which worldcon was held the year after it was held in yokohama
denver, colorado
col :  | year | name | city | country | guests of honor | size row 1 : 1st | 1939 | nycon i | new york, new york | united states | frank r. paul | 200 row 2 : 2nd | 1940 | chicon i | chicago, illinois | united states | e. e. "doc" smith | 128 row 3 : 3rd | 1941 | denvention i | denver, colorado | united states | robert a. heinlein | 90 row 4 : 4th | 1946 | pacificon i | los angeles, california | united states | a. e. van vogt\ne. mayne | 130 row 5 : 5th | 1947 | philcon i | philadelphia, pennsylvania | united states | john w. campbell, jr. | 200 row 6 : 7th | 1949 | cinvention | cincinnati, ohio | united states | lloyd a. eshbach (pro)\nted car | 190 row 7 : 11th | 1953 | philcon ii | philadelphia, pennsylvania | united states | willy ley | 750 row 8 : 13th | 1955 | clevention | cleveland, ohio | united states | isaac asimov (pro)\nsam moskowitz ( | 380 row 9 : 15th | 1957 | loncon i | london | uk | john w. campbell, jr. | 268 row 10 : 16th | 1958 | solacon | south gate, california | united states | richard matheson | 211 row 11 : 18th | 1960 | pittcon | pittsburgh, pennsylvania | united states | james blish | 568 row 12 : 21st | 1963 | discon i | washington, d.c. | united states | murray leinster | 600 row 13 : 26th | 1968 | baycon | berkeley, california | united states | philip josé farmer (pro)\nwalter j. daugh | 1,430 row 14 : 27th | 1969 | st. louiscon | st. louis, missouri | united states | jack gaughan (pro)\neddie jones (fan) | 1,534 row 15 : 29th | 1971 | noreascon i | boston, massachusetts | united states | clifford d. simak (pro)\nharry warner | 1,600 row 16 : 32nd | 1974 | discon ii | washington, d.c. | united states | roger zelazny (pro)\njay kay | 3,587 row 17 : 35th | 1977 | suncon | miami beach, florida | united states | jack williamson (pro)\nrobert a. madle | 3,240\n(4,200) row 18 : 36th | 1978 | iguanacon ii | phoenix, arizona | united states | harlan ellison (pro)\nbill bowers (fan | 4,700 row 19 : 37th | 1979 | seacon '79 | brighton | uk | brian aldiss (uk)\nfritz lei | 3,114 row 20 : 38th | 1980 | noreascon two | boston, massachusetts | united states | damon knight (pro)\nkate wilhelm (pro)\ | 5,850 row 21 : 39th | 1981 | denvention two | denver, colorado | united states | clifford d. simak (pro)\nc.l | 3,792 row 22 : 40th | 1982 | chicon iv | chicago, illinois | united states | a. bertram chandler (pro)\nfrank kelly frea | 4,275 row 23 : 41st | 1983 | constellation | baltimore, maryland | united states | john brunner (pro)\ndavid a. kyle ( | 6,400 row 24 : 42nd | 1984 | l.a.con ii | anaheim, california | united states | gordon r. dickson (pro)\ndick eney ( | 8,365 row 25 : 44th | 1986 | confederation | atlanta, georgia | united states | ray bradbury (pro)\nterry carr (fan) | 5,811 row 26 : 47th | 1989 | noreascon 3 | boston, massachusetts | united states | andre norton (pro)\nbetty and ian ballantine | 6,837\n(7,795) row 27 : 48th | 1990 | confiction | the hague | netherlands | harry harrison (pro)\nwolfgang jeschke | 3,580
city in which worldcon was held the year after it was held in yokohama
Year Name City Country Guests of Honor Size
1st 1939 Nycon I New York, New York United States Frank R. Paul 200
2nd 1940 Chicon I Chicago, Illinois United States E. E. "Doc" Smith 128
3rd 1941 Denvention I Denver, Colorado United States Robert A. Heinlein 90
4th 1946 Pacificon I Los Angeles, California United States A. E. van Vogt\nE. Mayne Hull 130
5th 1947 Philcon I Philadelphia, Pennsylvania United States John W. Campbell, Jr. 200
6th 1948 Torcon I Toronto, Ontario Canada Robert Bloch (Pro)\nBob Tucker (fan) 200
7th 1949 Cinvention Cincinnati, Ohio United States Lloyd A. Eshbach (pro)\nTed Carnell (fan) 190
8th 1950 Norwescon Portland, Oregon United States Anthony Boucher 400
9th 1951 Nolacon I New Orleans, Louisiana United States Fritz Leiber 190
10th 1952 TASFiC (Chicon II) Chicago, Illinois United States Hugo Gernsback 870
11th 1953 Philcon II Philadelphia, Pennsylvania United States Willy Ley 750
12th 1954 SFCon San Francisco, California United States John W. Campbell, Jr. 700
13th 1955 Clevention Cleveland, Ohio United States Isaac Asimov (pro)\nSam Moskowitz (mystery GoH) 380
14th 1956 NyCon II New York, New York United States Arthur C. Clarke 850
15th 1957 Loncon I London UK John W. Campbell, Jr. 268
16th 1958 Solacon South Gate, California United States Richard Matheson 211
17th 1959 Detention Detroit, Michigan United States Poul Anderson (pro)\nJohn Berry (fan) 371
18th 1960 Pittcon Pittsburgh, Pennsylvania United States James Blish 568
19th 1961 Seacon Seattle, Washington United States Robert A. Heinlein 300
20th 1962 Chicon III Chicago, Illinois United States Theodore Sturgeon 730
21st 1963 Discon I Washington, D.C. United States Murray Leinster 600
22nd 1964 Pacificon II Oakland, California United States Leigh Brackett (pro)\nEdmond Hamilton (pro)\nForrest J Ackerman (fan) 523
23rd 1965 Loncon II London UK Brian W. Aldiss 350
24th 1966 Tricon Cleveland, Ohio United States L. Sprague de Camp 850
25th 1967 Nycon 3 New York, New York United States Lester del Rey (pro)\nBob Tucker (fan) 1,500
26th 1968 Baycon Berkeley, California United States Philip José Farmer (pro)\nWalter J. Daugherty (fan) 1,430
27th 1969 St. Louiscon St. Louis, Missouri United States Jack Gaughan (pro)\nEddie Jones (fan) 1,534
28th 1970 Heicon '70 Heidelberg West Germany E.C. Tubb (UK)\nRobert Silverberg (US)\nHerbert W. Franke (Germany)\nElliot K. Shorter (fan) 620
29th 1971 Noreascon I Boston, Massachusetts United States Clifford D. Simak (pro)\nHarry Warner, Jr. (fan) 1,600
30th 1972 L.A.con I Los Angeles, California United States Frederik Pohl (pro)\nBuck & Juanita Coulson (fan) 2,007
31st 1973 Torcon II Toronto Canada Robert Bloch (Pro)\nWilliam Rotsler (fan) 2,900
32nd 1974 Discon II Washington, D.C. United States Roger Zelazny (pro)\nJay Kay Klein (fan) 3,587
33rd 1975 Aussiecon 1 Melbourne, Victoria Australia Ursula K. Le Guin (pro)\nSusan Wood (fan)\nMike Glicksohn (fan)\nDonald Tuck (Australian) 606
34th 1976 MidAmeriCon Kansas City, Missouri United States Robert A. Heinlein 3,014
35th 1977 SunCon Miami Beach, Florida United States Jack Williamson (pro)\nRobert A. Madle (fan) 3,240\n(4,200)
36th 1978 IguanaCon II Phoenix, Arizona United States Harlan Ellison (pro)\nBill Bowers (fan) 4,700
37th 1979 Seacon '79 Brighton UK Brian Aldiss (UK)\nFritz Leiber (US)\nHarry Bell (fan) 3,114
38th 1980 Noreascon Two Boston, Massachusetts United States Damon Knight (pro)\nKate Wilhelm (pro)\nBruce Pelz (fan) 5,850
39th 1981 Denvention Two Denver, Colorado United States Clifford D. Simak (pro)\nC.L. Moore (pro)\nRusty Hevelin (fan) 3,792
40th 1982 Chicon IV Chicago, Illinois United States A. Bertram Chandler (pro)\nFrank Kelly Freas (pro)\nLee Hoffman (fan) 4,275
41st 1983 ConStellation Baltimore, Maryland United States John Brunner (pro)\nDavid A. Kyle (fan) 6,400
42nd 1984 L.A.con II Anaheim, California United States Gordon R. Dickson (pro)\nDick Eney (fan) 8,365
43rd 1985 Aussiecon Two Melbourne, Victoria Australia Gene Wolfe (pro)\nTed White (fan) 1,599
44th 1986 ConFederation Atlanta, Georgia United States Ray Bradbury (pro)\nTerry Carr (fan) 5,811
45th 1987 Conspiracy '87 Brighton UK Doris Lessing (UK)\nAlfred Bester (US)\nBoris and Arkady Strugatsky (USSR)\nJim Burns (artist)\nRay Harryhausen (film)\nJoyce and Ken Slater (fan)\nDavid Langford (special fan) 4,009\n(5,425)
46th 1988 Nolacon II New Orleans, Louisiana United States Donald A. Wollheim (pro)\nRoger Sims (fan) 5,300
47th 1989 Noreascon 3 Boston, Massachusetts United States Andre Norton (pro)\nBetty and Ian Ballantine (pro)\nThe Stranger Club (fan) 6,837\n(7,795)
48th 1990 ConFiction The Hague Netherlands Harry Harrison (pro)\nWolfgang Jeschke (pro)\nJoe Haldeman (pro)\nAndrew I. Porter (fan) 3,580
49th 1991 Chicon V Chicago, Illinois United States Hal Clement (pro)\nMartin H. Greenberg (pro)\nRichard Powers (pro)\nJon and Joni Stopa (fan) 5,661
50th 1992 MagiCon Orlando, Florida United States Jack Vance (pro)\nVincent Di Fate (artist)\nWalter A. Willis (fan) 5,319\n(6,368)
51st 1993 ConFrancisco San Francisco, California United States Larry Niven\nAlicia Austin\nTom Digby (fan)\nJan Howard Finder\nMark Twain (Dead GoH) 6,602
52nd 1994 ConAdian Winnipeg Canada Anne McCaffrey (pro)\nGeorge Barr (artist)\nRobert Runte (fan) 3,570\n(7,725)
53rd 1995 Intersection Glasgow, Scotland UK Samuel R. Delany (writer)\nGerry Anderson (media)\nLes Edwards (artist)\nVin¢ Clarke (fan) 4,173\n(6,524)
54th 1996 L.A.con III Anaheim, California United States James White (writer)\nRoger Corman (media)\nElsie Wollheim (special)\nTakumi and Sachiko Shibano (fan) 6,703
55th 1997 LoneStarCon 2 San Antonio, Texas United States Algis Budrys (pro)\nMichael Moorcock (pro)\nDon Maitz (artist)\nRoy Tackett (fan) 4,634\n(5,614)
56th 1998 BucConeer Baltimore, Maryland United States C. J. Cherryh\nMilton A. Rothman\nStanley Schmidt\nMichael Whelan\nJ. Michael Straczynski (special) 6,572
57th 1999 Aussiecon Three Melbourne, Victoria Australia Gregory Benford, author\nGeorge Turner, author\nBruce Gillespie, fan 1,626\n(2,872)
58th 2000 Chicon 2000 Chicago, Illinois United States Ben Bova (author)\nBob Eggleton (artist)\nJim Baen (editor)\nBob & Anne Passovoy (fan) 5,794\n(6,574)
59th 2001 Millennium Philcon Philadelphia, Pennsylvania United States Greg Bear (author)\nStephen Youll (artist)\nGardner Dozois (editor)\nGeorge H. Scithers (fan) 4,840\n(6,269)
60th 2002 ConJosé San Jose, California United States Vernor Vinge (author)\nDavid Cherry (artist)\nBjo & John Trimble (fan)\nFerdinand Feghoot (imaginary) 5,162\n(5,916)
61st 2003 Torcon 3 Toronto Canada George R. R. Martin (author)\nFrank Kelly Freas (artist)\nMike Glyer (fan)\nRobert Bloch (GoHst of Honor) 3,834\n(4,986)
62nd 2004 Noreascon 4 Boston, Massachusetts United States Terry Pratchett (pro)\nWilliam Tenn (pro)\nJack Speer (fan)\nPeter Weston (fan) 5,651\n(7,485)
63rd 2005 Interaction Glasgow, Scotland UK Greg Pickersgill\nChristopher Priest\nRobert Sheckley\nLars-Olov Strandberg\nJane Yolen 4,115\n(5,202)
64th 2006 L.A.con IV Anaheim, California United States Connie Willis (Author)\nJames Gurney (Artist)\nHoward DeVore (fan)\nFrankie Thomas (Special) 5,738\n(6,291)
65th 2007 Nippon 2007 Yokohama Japan Sakyo Komatsu (author)\nDavid Brin (author)\nTakumi Shibano (fan)\nYoshitaka Amano (artist)\nMichael Whelan (artist) 3,348\n(5,149)
66th 2008 Denvention 3 Denver, Colorado United States Lois McMaster Bujold (pro)\nTom Whitmore (fan)\nRick Sternbach (artist) 3,752
67th 2009 Anticipation Montréal, Québec Canada Neil Gaiman (pro)\nElisabeth Vonarburg (pro)\nTaral Wayne (fan)\nDavid Hartwell (editor)\nTom Doherty (publisher) 3,925\n(4,499)
68th 2010 Aussiecon Four Melbourne, Victoria Australia Kim Stanley Robinson (author)\nRobin Johnson (fan)\nShaun Tan (artist) 2,101\n(3,462)
69th 2011 Renovation Reno, Nevada United States Tim Powers\nEllen Asher\nBoris Vallejo\nCharles N. Brown (in memoriam) 4,112\n(5,526)
70th 2012 Chicon 7 Chicago, Illinois United States Mike Resnick (author)\nRowena Morrill (artist)\nStory Musgrave (astronaut)\nPeggy Rae Sapienza (fan)\nJane Frank (agent)\nSy Liebergot (special guest)\nJohn Scalzi (toastmaster) 4,743\n(6,197)
71st 2013 LoneStarCon 3 San Antonio, Texas United States Ellen Datlow\nJames Gunn\nWillie Siros\nNorman Spinrad\nDarrell K. Sweet (in memoriam)\nPaul Cornell (toastmaster)\nLeslie Fish\nJoe R. Lansdale 4,311\n(6,060)
72nd 2014 Loncon 3 London UK Iain M. Banks (in memoriam)\nJohn Clute\nChris Foss\nMalcolm Edwards\nJeanne Gomoll\nRobin Hobb\nBryan Talbot
73rd 2015 Sasquan Spokane, Washington United States Brad Foster\nDavid Gerrold\nVonda McIntyre\nTom Smith\nLeslie Turek
Denver, Colorado