Here is this year's Trick or Treat schedule, sorted by location. Information from WISN.com.
Addison 3 to 6 p.m. 10/28/2007
Bayside 2:30 to 5:30 p.m. Fright Night is at Ellsworth Park from 5:30 to 7:30 p.m. 10/28/2007
Beaver Dam, city 4 to 6 p.m. 10/28/2007
Belgium 4 to 7 p.m. 10/28/2007
Big Bend 6 to 8 p.m. 10/31/2007
Bristol 4 to 7 p.m. 10/31/2007
Brookfield, city 5 to 7:30 p.m. 10/31/2007
Brookfield, town 6 to 8 p.m. 10/31/2007
Brown Deer 1 to 4 p.m. 10/28/2007
Burlington 2 to 5 p.m. 10/28/2007
Butler 2 to 4 p.m. 10/28/2007
Caledonia 4 to 7 p.m. 10/28/2007
Campbellsport 2 to 4 p.m. The Halloween Caper is Oct. 25 from 5 to 9:30 p.m. at the elementary school 10/28/2007
Cascade 2 to 4 p.m. Only go to houses with the porch light on. 10/28/2007
Cedar Grove 4 to 7 p.m. 10/31/2007
Cedarburg, 4 to 7 p.m. 10/28/2007
Chenequa 4 to 7 p.m. 10/31/2007
Cleveland 2 to 4 p.m. 10/28/2007
Cudahy 2 to 4 p.m. 10/28/2007
Darien, village 4 to 7 p.m. 10/31/2007
Delafield, city 5 to 8 p.m. The business trick-or-treat is on the 27th from 5 to 7 p.m. and the pumpkin illumination is at 7 p.m. on Saturday. 10/28/2007
Delafield, town 5 to 8 p.m. 10/31/2007
Delavan, city 4 to 6 p.m. There is a Goblin Walk at 6:30 p.m. 10/31/2007
Delavan, town, 1 to 3 p.m. There is a party from 3 to 6 at community Park. 10/28/2007
Dousman 4 to 7 p.m. 10/31/2007
Dover6 to 8 p.m. 10/31/2007
Eagle 4 to 6 p.m. 10/28/2007
East Troy, village 4 to 7 p.m. 10/27/2007
Elkhart Lake 2 to 4 p.m. 10/28/2007
Elkhorn 5 to 7 p.m. 10/31/2007
Elm Grove 5 to 7:30 p.m. 10/27/2007
Erin 4 to 6 p.m. 10/28/2007
Fond du Lac 3:30 to 5:30 p.m. 10/28/2007
Fontana 3 to 7 p.m. 10/31/2007
Fort Atkinson 2 to 5 p.m. 10/28/2007
Fox Lake 1 to 3 p.m. 10/28/2007
Fox Point 1 to 4 p.m. 10/28/2007
Franklin 4 to 7 p.m. 10/28/2007
Fredonia 4 to 7 p.m. 10/27/2007
Genesee, town 5 to 7:30 p.m. 10/31/2007
Genoa City 4 to 7 p.m. The Spooktacular and Haunted Hayride begins are from 6 to 9 p.m. 10/31/2007
Germantown, village 5:30 to 7:30 p.m. 10/31/2007
Glendale 1 to 4 p.m. 10/28/2007
Grafton, village 4 to 7 p.m. 10/28/2007
Greendale 1 to 4 p.m. the kids' parade is at noon. 10/28/2007
Greenfield 4 to 7 p.m. Fright Night for Greenfield residents is from 5:30 to 9 p.m. on Oct. 26. 10/28/2007
Hales Corners 4 to 7 p.m. 10/28/2007
Hartford 4 to 6 p.m. -- Halloween Hoopla is the 31st from 6 to 6:45 p.m. for kids ages 2 to 5. 10/28/2007
Hartland 6 to 8 p.m. The business trick-or-treat is 6 to 8 p.m. on the 25th. 10/31/2007
Horicon 1 to 4 p.m. The Halloween Bash is on Nov. 2 from 5 to 9:30 p.m. at Van Brunt Elementary School. 10/28/2007
Howards Grove 5 to 7 p.m. 10/31/2007
Jackson5 to 7 p.m. The Ghoul Gala is from 2:30 to 5 p.m. at the town hall. 10/28/2007
Jefferson 1 to 4 p.m. 10/28/2007
Kenosha 3 to 6 p.m. 10/28/2007
Kewaskum 4 to 6 p.m. 10/28/2007
Kohler 4:30 to 6:30 p.m. 10/31/2007
Lake Geneva 1 to 4 p.m. 10/28/2007
Lake Mills 6 to 8 p.m. Witches Night out at the downtown businesses is from 3:30 to 8 p.m. 10/31/2007
Lannon 2 to 5 p.m. The parade starts at 1:30 p.m. 10/28/2007
Lisbon 5 to 8 p.m. 10/27/2007
Mayville 1 to 3 p.m. 10/28/2007
Menomonee Falls 5 to 8:30 p.m. On the 26th and 27th, enjoy Haunted Halloween at Old Falls Village from 6 to 9 p.m. 10/31/2007
Mequon 4 to 7 p.m. 10/28/2007
Merton, town 4 to 7 p.m. 10/28/2007
Merton, village 5 to 8 p.m. 10/28/2007
Milwaukee -- South First Street to South Fifth Place and from West Armour to West Martin Lane 7 to 9 p.m. 10/27/2007
Milwaukee 1 to 4 p.m. 10/28/2007
Mount Pleasant 4 to 7 p.m. 10/28/2007
Mukwonago, town 4 to 7 p.m. 10/28/2007
Mukwonago, village 4 to 6 p.m. 10/28/2007
Muskego 6 to 8 p.m. 10/31/2007
Nashotah, village4 to 7 p.m. 10/28/2007
New Berlin4 to 7 p.m. 10/28/2007
Newburg 3 to 5 p.m. There is a bonfire at 7 p.m. 10/27/2007
North Fond du Lac 3:30 to 5:30 p.m. 10/28/2007
North Lake4 to 7 p.m. 10/28/2007
North Prairie 4 to 7 p.m. 10/28/2007
Norway/Wind Lake 5 to 8 p.m. 10/27/2007
Oak Creek 4 to 6 p.m. 10/28/2007
Oconomowoc, city Businesses: 2 to 4 p.m., Parade: 4 p.m., Residential: 6 to 8 p.m. 10/27/2007
Oostburg 4 to 7 p.m. 10/31/2007
Oshkosh 5 to 7 p.m. Downtown Oshkosh trick-or-treat is on the 30th from 5 to 7 p.m. 10/31/2007
Oshkosh 5 to 7 p.m. Trick-or-treating at downtown businesses displaying a poster in their window. 10/30/2007
Paddock Lake 4 to 7 p.m. 10/31/2007
Palmyra 3 to about 6:30 p.m. There is a parade from the fire hall at 3:30 p.m. 10/28/2007
Pewaukee, city 3 to 6 p.m. 10/28/2007
Pewaukee, village 4 to 6 p.m. 10/28/2007
Pleasant Prairie 3 to 6 p.m. 10/28/2007
Plymouth 3 to 5 p.m. 10/28/2007
Port Washington 4 to 7 p.m. 10/28/2007
Racine 4 to 6 p.m. 10/28/2007
Random Lake 3 to 5 p.m. 10/28/2007
Raymond 2 to 5 p.m. 10/28/2007
Richfield 3 to 6 p.m. 10/27/2007
River Hills 1 to 4 p.m. 10/28/2007
Rochester, town & village 4 to 6 p.m. 10/28/2007
Rubicon 1 to 3 p.m. 10/28/2007
Saint Francis 4 to 7 p.m. 10/28/2007
Salem 4 to 7 p.m. The Halloween Spooktacular is from 6 to 9 p.m. at Trevor Grade School on Oct. 27 10/31/2007
Saukville 4 to 7 p.m. 10/28/2007
Sharon 4 to 7 p.m. 10/31/2007
Sheboygan 4 to 7 p.m. 10/31/2007
Sheboygan Falls 4 to 7 p.m. 10/31/2007
Shorewood 3 to 5 p.m. 10/28/2007
Silver Lake 4 to 7 p.m. 10/31/2007
Slinger 5 to 7 p.m. 10/27/2007
Somers 1 to 4 p.m. 10/28/2007
South Milwaukee 2 to 4 p.m. 10/28/2007
Stone Bank 4 to 7 p.m. 10/28/2007
Sturtevant 5 to 7 p.m. with a bonfire at 8 p.m. in Fireman's Park 10/31/2007
Sullivan Starts with a party at the elementary school at 1 p.m. and then a parade. 10/28/2007
Summit 5 to 8 p.m. 10/31/2007
Sussex 6 to 8 p.m. 10/27/2007
Theresa 2 to 5 p.m. 10/28/2007
Thiensville 4 to 7 p.m. 10/28/2007
Twin Lakes 4 to 7 p.m. 10/31/2007
Union Grove 5:30 to 8 p.m. 10/31/2007
Vernon 2 to 4 p.m. 10/28/2007
Wales 4 to 7 p.m. 10/28/2007
Walworth, village 4 to 7 p.m. 10/31/2007
Waterford, town 4 to 7 p.m. 10/31/2007
Waterford, village 5:30 to 7:30 p.m. 10/31/2007
Waterloo (residential) 2 to 5 p.m. 10/28/2007
Watertown 1 to 4 p.m. with a parade at 4 p.m. downtown 10/28/2007
Waukesha, city 5 to 7 p.m. 10/31/2007
Waukesha, town 4 to 7 p.m. 10/31/2007
Waupun 2 to 4 p.m. 10/27/2007
Wauwatosa 1 to 4 p.m. There is a village event from 1:30 to 4 p.m. on the 27th. 10/28/2007
West Allis 1 to 3 p.m. 10/28/2007
West Bend 4 to 6 p.m. The Spooktacular is Oct. 20 in Regner Park. 10/28/2007
West Milwaukee 1 to 3 p.m. 10/28/2007
Whitefish Bay 4 to 6 p.m. 10/28/2007
Whitewater 4 to 7 p.m. 10/31/2007
Williams Bay 3 to 5 p.m. followed by a party at the elementary school 10/28/2007
Yorkville 5:30 to 8 p.m. 10/31/2007