[Amended 5-27-1957 by Ord. No. 45; 10-21-1957 by Ord. No. 48; 2-8-1958 by Ord. No. 50; 4-5-1958 by Ord. No. 51; 12-22-1959 by Ord. No. 78; 12-18-1961 by Ord. No. 110; 10-1-1962 by Ord. No. 119; 6-10-1974 by Ord. No. 74-325; 6-15-1987 by Ord. No. 87-516; 9-28-1995 by Ord. No. 95-635; 11-3-2005 by Ord. No. 2005-750; 9-18-2014 by Ord. No. 2014-826; 3-26-2015 by Ord. No. 2015-837; 5-17-2018 by Ord. No. 2018-855]
A. 
For the purposes of this chapter, the Township is hereby divided into 31 classes of districts which shall be designated as follows:
AG
Agricultural District
R-A
Recreational Area District
R-1A
Residential District
R-1
Residential District
R-2A
Residential District
R-2
Residential District
G
Residential District
HR
Residential District
R-3
Residential District
R-3A
Residential District
R-3B
Residential District
U-R
Residential District
R-55A
Residential District
R-55B
Residential District
AR
Administrative and Research District
AR-1
Administrative and Research District
C-O
Commercial Office District
NC
Neighborhood Commercial District
LC
Limited Commercial District
GC
General Commercial District
SC
Shopping Center District
SM
Suburban Metropolitan District
SM-1
Suburban Metropolitan District
LI
Limited Industrial District
HI
Heavy Industrial District
FP
Floodplain Conservation District
GR
Garden Apartments District
SS
Steep Slope District
CDO
Cluster Development Overlay
KPMU
King of Prussia Mixed-Use District
NMU
Neighborhood Mixed-Use District
B. 
The locations and boundaries of such districts shall be as shown upon the map attached hereto and made a part hereof, which shall be designated as the "Upper Merion Zoning Map." Said map and all the notations, references and other data shown thereon shall be as much a part of this chapter as if fully described herein.[1]
[1]
Editor's Note: The Zoning Map is on file in the office of the Township Manager. The Table of Zoning Map Amendments is included as an attachment to this chapter.
The boundaries between districts are, unless otherwise indicated, either the center lines of streets, lanes, watercourses and rights-of-way of power lines, railroads and other public utilities or such lines extended or lines parallel thereto. Where the boundaries of a single district are indicated as including directly opposite sides of a street, lane, lake or watercourse or right-of-way of a power line, railroad or other public utility for any portion of its length, the district so indicated shall be construed to apply to the entire bed of such street, lane, lake or watercourse or right-of-way of such power line, railroad or other public utility lying within such portion of its length. Where uncertainty exists as to the location of any said boundaries as shown on the Zoning Map, the following rules shall apply:
A. 
Where a district boundary is indicated as approximately following the center line of a street, lane, lake or watercourse or right-of-way of a power line, railroad or other public utility, such center line shall be construed to be such boundary.
B. 
Where a district boundary is indicated as approximately following a lot or other property line, such lot or property line shall be construed to be such boundary.
C. 
Where a district boundary divides a lot or runs through undivided property, the location of such boundary, unless otherwise specified by figures on the Zoning Map, shall be determined by the use of the scale appearing on said map.
D. 
Where figures are shown on the Zoning Map between a street and a district boundary, they shall indicate that the district boundary runs parallel to the street line at a distance therefrom equivalent to the number of feet so indicated, unless otherwise specified. Where scaled distances do not agree with such figures, the figures shall control.
Whenever federal or state-owned property is included in one or more zoning districts, it shall be subject to the provisions of this chapter only insofar as permitted by the Constitution and laws of the United States of America and of the Commonwealth of Pennsylvania.