Gun Barrel City, TX
Telephone, TX
Bug Tussle, TX
Cut-and-Shoot, TX
Ding Dong, TX
One of those is real.
So are the others.
Arsenal, NY
Pope, RI
Sidesaddle, UT
Orzab AL
So AK & Ack AK
Allthatj AZ
Hereyou AR
Ka CA
Co CO
Usufru CT
Hi DE
Dik DC
Truf FL
Oo GA
Get HI
Ego ID
Wheresyour ID
Aryoo IL
Pale IN
Phob IA
Bolloc KS
Stic KY & Haveany KY
Oola LA
Kissa ME
Mynameis MD & Wheresthew MD
Look MA
Bona MI
Sea MN
Mrsor MS
Keb MO
Taxexe MT
Tennis NE & Haveyou NE
Colossal NV
Phnompe NH
Gimmea NJ
Secretof NM
Fd NY
Fu NC & Lizard Lick NC (exists) as does Conetoe (Kah nee’ tah) & Blowing Rock
Fecu ND
Oh OH & D’ OH
Im OK
Either OR
Ohmeinpa PA & Oompah PA
Haraki RI
Toad SC
Bo SD
At TN & Oncebit TN
Bo TX
Sport UT
Disabled VT
O VA
Babbawa WA
Whobeyou WV
Fi WI
Outtamy WY & Not, WY
Liverwort
Danks
Graphoria
Deposit
Bunt
Angle City
Desdemona
Barefield
Spigot
Quisp
Higgs’ Stake, NV
San Myrtle, CA
Williwaw, AK
Hintuk-on-Baffin, Nunavut, Canada
Point Blank, TX
Piroux, LA
Cavein, AR
Muscadine, MS
I included a real one on purpose…then found on googling that another one was real, and a third was an actual town name in a different state.
Grover’s Corners NH
Hooterville IL
Raccoon City KS
Castle Rock ME
Junebug OK
Angel Grove CA
As you might know, Northern New England is full of towns named after more exotic locals like Egypt, Poland, Berlin (but we deliberately misprounce it) and Paris. So these ought to fit in nicely…
Barcelona, Maine
Stockholm, New Hampshire
Paraguay, Maine
Zurich, New Hampshire
Lagos, Maine
Democratic Republic of Congo, Vermont
Buggerall, QLD
Whakarwi, NZ
Little Rutting On The Side, UK
Wanker’s Creek, TAS
Cat Wibble-Upon-Sea, UK
Sand, SA
Arsend, NSW
Woop Woop, QLD
Blank Spot On The Map, W.A.
Interesting aside: I believe it was Bill Bryson who once said that most place names in America or Australia are named after the first White person to get there or the last Native Inhabitant to leave. 
In New South Wales’ far north hippy country:
Bringabong
Woodenbong
Brigabongalong
Bong Waters
(One is real)
I thought it was in Nevada.
I thought it was “Pam’s Bottom”.
Years ago, in fact, decades ago, National Lampoon had a two page map of a made-up version of flyover country. The “states” had names like Minnebraska and Kentockowa, and the majority of the town names were ‘filthy’ as you put it. Still, a lot of them were merely bizarre and funny, such as one small town named “Goiter”.
In retrospect, it’s not all that unusual for small German towns to have funny names. One that I remember in particular is Igel (Hedgehog) on the border of Luxembourg.
(IIRC ‘hedgehog’ means something different in Britain, on which version of English my standby German/English dictionary was based, but still.)
Heinlein City, Luna
Near Ruttingham Farm?
How about Onett or Threed?
Texas towns always seem to have a certain ring to them. King of the Hill seems to nail it dead on with the names of its fictional places; Arlen, McMaynerbury, and so on.
Here’s some off-the-top-of-my-head Texasy-sounding imaginary town names.
Morine
Blayloch
Culberson
McNutt
Hereford
Lock n’ Load
Spur
Burnett
Buckshot
General
Reload
Angus
Gus
Schreckenbacker
Hoss
Ricochet
Agua Muerto
Hebert
Buell
Thirty Aught Six
Charley
Rex
Pilsen
Caliente Tanks
Hawk n’ Spit
Arbach
Schoop
Drip Gap
Burdine
The Cleveland imaginary suburb name generator:
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Take a two syllable word; a 19th century historic figure with an Anglo name, a geographic feature, a type of deciduous tree, or something else that sounds sylvan and quaint.
-
Add “Heights” to it.
Cedar Heights? Valley Heights? Fillmore Heights? The possibilities are unlimited.
The New Mexico imaginary town name generator:
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Take a Spanish first name.
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If it’s a woman’s name, add “Santa” as a prefix. If it’s a man’s name, add “Santo” to the beginning.