Guthrie County E911 Office
200 North 5th Street
Guthrie Center, IA 50115
Ph: (641) 747-8320
Fax: (641) 747-8916
Hrs: 8:00 to 4:30 (M-F)
E911 Resources > Required Address Markers
How Address Numbers Are Assigned
When the E911 system was begun in the early 1990s, all rural sites
received an address. Everyone within City limits already had
addresses but rural residents had RFD Box numbers that provided no
description of where the site was. The purpose of E911 addresses is
to provide the residence with a number that helps locate that
dwelling, business, or other site.
With the exception of Lake Diamondhead and Lake Panorama all
addresses within the County fall between 1000 and 3599 and do follow
a pattern. Addressing starts at the north end and west side of the
County at 1000. Each mile has 100 numbers. Even numbers are on the
east and south side of the roadway and odd numbers are on the west
and north sides. So if you are in the sixth mile from the Greene
County line you will be in the 1500 block (1000, 1100, 1200, 1300,
1400, 1500 to give six miles). If you were ¾ of a mile south of the
section line and on the west side of the road, then the last two
numbers would be 75 (75% of the way through the section).
So the address would be 1575. In this way you can figure out the
location of an address on the map. As an example, 1575 250th St
would be ¾ of a mile into the 6th mile from the Audubon County line
on the north side of the roadway. This will work for ANY address in
the rural areas of the County except the two lakes.
It is also easy to locate the general area of either lake you are
in. Lake Diamondhead has ONLY 8000 and 9000 addresses with the 8000
addresses on the west side of the Lake and the 9000 addresses on the
east side of the Lake. The numbers start smaller at the north end
and become larger as you go to the south end.
At Lake Panorama the numbers are also sequential. The 4000 and 5000
numbers are on the east side of the Lake with the smaller numbers to
the north end. The 6000 and 7000 numbers are on the west side of the
Lake with the smaller numbers to the north end. So Lake addresses
are easily known and relatively easy to locate on a map.
Anyone needing an address in the rural areas should contact this
office. We will measure and GPS the driveway location and then
determine the address from the position within the township/section
of that location. If you are within the City limits of any town in
the County, you must see your City Clerk for an address assignment.
Other sites of interest on this topic:
Required Address Markers
Guthrie County Ordinance #9