Information & Maps
City Sphere of Influence Maps
LAFCO staff updates Sphere of Influence Maps for each city as changes occur and yearly, to reflect current city limit boundaries. If you have any questions regarding a specific area, please contact our office.
Sphere of Influence (SOI) = Plan for the probably physical boundaries and service area of a local agency (within a 20 year period).
Primary Area = Area around a local agency within which territory is eligible for annexation within a 0-10 year period.
LAFCO staff compiles data for each city in January summarizing annexations that have occurred in the previous year, as well as those in the past decade. (File is in PDF format, 2 pages.)
LAFCO History
Learn more about how Local Agency Formation Commissions were created and the role of Stanislaus LAFCO.
LAFCO staff updates Sphere of Influence Maps for each city as changes occur and yearly, to reflect current city limit boundaries. If you have any questions regarding a specific area, please contact our office.
Sphere of Influence (SOI) = Plan for the probably physical boundaries and service area of a local agency (within a 20 year period).
Primary Area = Area around a local agency within which territory is eligible for annexation within a 0-10 year period.
Annual Annexation Summary (as of Dec. 31, 2009)Ceres - SOI Adopted January 24, 2001
Hughson - SOI Adopted September 23, 2009
Modesto - SOI Adopted September 22, 2004
Newman - SOI Adopted January 28, 2009
Oakdale - SOI Adopted August 23, 2006
Patterson - SOI Adopted March 24, 2010
Riverbank - SOI Adopted May 28, 1997
Turlock - SOI Adopted September 26, 2007
Waterford - SOI Adopted August 22, 2007
LAFCO staff compiles data for each city in January summarizing annexations that have occurred in the previous year, as well as those in the past decade. (File is in PDF format, 2 pages.)
LAFCO History
Learn more about how Local Agency Formation Commissions were created and the role of Stanislaus LAFCO.
Stanislaus LAFCO