A. 
For the purpose of this chapter, the Municipality is hereby divided into classes of districts which shall be designated as follows:
R-1
Residence District
R-2
Residence District
MSMU
Main Street Mixed-Use District
MR
Multi-Family Residential District
NC
Neighborhood Commercial District
CR
Commercial Retail District
OR
Office Residential District
OCR
Office Commercial Retail District
DR
Downtown Riverfront District
TC
Town Center District
TC-II
Town Center II District
LIMU
Limited Industrial Mixed-Use District
HI
Heavy Industrial District
IN
Institutional District
RE
Recreation District
GRO
Gateway Redevelopment Overlay District
RC
Retirement Community Overlay District
B. 
The locations and boundaries of such districts shall be as shown upon the map attached to and hereby made a part of this chapter, which shall be designated as the "Zoning Map." Said map and all the notations, references and other data thereon shall be as much a part of this chapter as if fully described herein.
The boundaries between districts are, unless otherwise indicated, either the center lines of streets, lanes, watercourses and rights-of-way of power lines and other public utilities to 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 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 of 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, alley, watercourse or right-of-way of a power line 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 line or other property line, such lot line 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 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 the Commonwealth of Pennsylvania.
The Municipality of Norristown or its designees are exempt from this chapter.