Town file

Mason City, Iowa

Mason City, Iowa (Cerro Gordo County, Iowa) is the town in one episode of Small Town Murder, the comedy true-crime podcast: episode 645, "Breaking Badder" (6 November 2025). Mason City, Iowa, is in Cerro Gordo County in the north central part of the state, about two hours from Des Moines, with a population in 1993 of 27,385.

Town
Mason City
County
Cerro Gordo County
State
Iowa
Country
USA
Episodes
645
Approximate location
43.148, -93.200
N ↑Public placePublic placePublic placeTown centre (approximate places)
Static locations; no street basemap. OpenFreeMap © OpenMapTiles Data from OpenStreetMap.

Episode 645 / 6 November 2025 / 180 min / full

Breaking Badder

"We are going to Iowa this week... Mason City, Iowa... in north central Iowa... Cerro Gordo County" about 0:04:13

The case: Murder of Greg Nicholson, Lori Duncan, Candy Duncan, Amber Duncan and Terry DeGeis (July 1993 and November 1993). Read the case file.

The figures, as told in 2025

Population
27,385
Median age
42 and a half
Median household income
$56,009
Two-bedroom rent
$840
Religious
67.6%
Property crime
▲ about one quarter above
Violent crime
▼ about half

History, in brief

  • Known for its musical and masonry heritage and a large collection of Prairie School architecture. about 0:05:45
  • The first settlement in the area was around 1853 at the confluence of the Winnebago River and Calamus Creek. about 0:07:10
  • The town was called Shibboleth, Masonic Grove and Masonville before Mason City was adopted in 1855, named for a founder's son, Mason Long. about 0:07:20
  • Nicknamed River City because the Winnebago River and Calamus Creek converge there. about 0:05:19

The reviews read out

"Ranked the 31st best place to retire in Iowa and 467th best in the United States."
about 0:07:43

5 stars

"Lived there my whole life; everyone is a little dramatic about the town's flaws; the perfect combination of big city but still local; events all year, not much crime and most people are nice."
about 0:08:23

3 stars

"A small town that has always been small; the local government seems to want to keep it that way; companies have been shut out; plenty of jobs for the unskilled and fabulous restaurants but almost no shopping."
about 0:09:17

3 stars

"Born and raised there; as a teenager it is a good place for old people to drive around and do nothing; 55 churches and an art museum, but run-down houses and untrimmed lawns; schools are good."
about 0:10:27

2 stars

"A lot of crime in this town; the killing is really close."
about 0:11:33

"Murder, arson, abductions, bestiality, gang killings, meth labs, panty thieves, high utility bills, no jobs, corrupt police, evil judges, extreme weather, vandalism, slumlords, religious freaks, backstabbing busybodies and horrible bland food."
about 0:12:02

Open the episode file

Nearest Small Town Murder towns

Everything here is as told in the episode, on the date it went out; figures and places may have changed since. Endings are covered: open an episode and use the spoiler switch to read them.