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Custom Maps on Google Maps tool, v 1.1 ©2019 Randy Majors

Custom Maps on Google Maps tool

Create your own custom Google Map using any combination of ZIP Codes, counties, cities and more

Quickly create a sales territory map, delivery area map or service area map on Google Maps. Show an overall merged boundary and add your own title to the map. Popular uses include sales, business planning and publishing.

QUICK TIPS FOR USING THIS TOOL:
  1. Follow instructions below to create a link to your own custom map.
  2. To go to another location, type any place or address in the "Search places" box above the map*
    OR: Zoom into your place of interest on the map
  3. Optionally, check the "Show county labels" checkbox in the lower left corner of the map to see the names of the counties on the map
  4. Optionally, check the "Also show US city limits" checkbox in the lower left corner of the map to see City Limits overlaid on the map (available in the U.S. only)
    Also show US townships by checking the box in the lower left corner of the map
  5. Click the "⊕ Locate" button in the upper right corner of the map to use your current location † and quickly answer "what county am I in?"
  6. Subscribe in the top header to receive notification of tool updates and usage tips
* You can also type in GPS coordinates in decimal degrees into the Search places box. For example, type -105.25, 40 for Boulder, Colorado.
** or equivalent province, district, etc.
*** All information is reported based on the location of the red dot on the maps; to move the red dot, click the map
The "Locate" button will be more accurate on smartphones and other devices containing a GPS; desktop browsers typically show an approximate location

How to create a sales territory, delivery area, or service area map based on ZIP Codes

Follow the easy steps below to create a custom map using ZIP Codes, optionally show the overall boundary and add a map title

To zoom to one or multiple ZIP Codes, and optionally show their boundary (e.g. for a service territory, sales territory or delivery area), create a link such as this:

https://www.randymajors.com/p/customgmap.html?zips=10023,10024,10025,10026&zipboundary=show&title=My+Service+Territory

TIP: copy/paste the link above and customize to suit your needs

The parameters you can use are as follows:
      • zips - expects a comma-separated list of one or multiple 5-digit U.S. ZIP Code(s) (do not use spaces between the commas), for example, ?zips=10023,10024
      • zipboundary - optionally shows a merged overall boundary based on the zips (e.g. for a service territory or delivery area) by using the word show, as in, &zipboundary=show 
      • cities - optionally shows U.S. city limits by using the word show, as in, &cities=show 
      • title - optionally give your map a title (use the + character to represent spaces), for example, &title=My+Sales+Territory
      • color - optionally choose the color used for the Map Title and the ZIP boundary, expects a 6-character hex color code without the leading # character, for example, &color=00FF00 would create a green map title and ZIP boundary (free tools are widely available on the internet to find your hex color)
      • labels - optionally shows county labels by using the word show, as in, &labels=show

      A few important things to make this work:

      1.  You must use the question mark ( ? ) right after .html, as shown above and below
      2.  Do NOT use spaces anywhere in the URL or query parameters
      3.  You must separate query parameters using the ampersand ( & ), as shown above and below
      4.  User the + character to represent spaces in the title parameter

      TIP:  For simplicity, you can drop the https://www from the front and just create the link as:

      With this functionality, you can feel free to create links on your own website that open a window to the Custom Maps on Google Maps tool, zoomed into your area of interest and showing a ZIP Code based sales territory, service territory or delivery area!

      Some websites that make use of this custom map functionality


      Feel free to share this with others who may find this functionality useful!


      NOTE:  The above article relates to PRESENT-day County Lines.  Here are the instructions for linking to HISTORICAL County Lines.


      COVERAGE NOTES:
      • US coverage includes Counties in all 50 states plus Puerto Rico, US Virgin Islands, Guam, Northern Mariana Islands and American Samoa
        "Also show US city limits" draws all incorporated cities and towns in the United States and its territories and possessions
        "Also show US townships" draws all minor civil divisions (MCDs) (these are often townships)
      • Within the UK, England displays Counties and Unitary Authorities, Scotland displays Council Areas, Wales displays Principal Areas, and Northern Ireland displays Districts. Explanation of Unitary Authorities, Council Areas, Principal Areas and Districts.
      • Australia displays Local Government Areas (LGAs)
      • New Zealand displays Territorial Authorities
      • Canada displays Census Divisions, which are Counties in some provinces but may include other geographies
      • Mexico displays Municipalities, which are the next level administrative divisions below State
      • Switzerland displays Districts

      OTHER NOTES:
      • The Search places box uses a standard Google Maps geocoding engine, therefore you can type street addresses, road names, points of interest, and GPS coordinates (see * above) to see what county that location is part of
      • Many of the map layers from which this information is extracted are very large, so it may take several seconds for all of the map layers to finish drawing
      • Because the map layers are large, boundaries will not be shown if you are zoomed out too far
      • Note that typing an address will zoom in the map very close, whereas typing a city or county by itself will show you a map with a wider view
      • Disclaimer: While the number of decimals in the latitude and longitude displayed for the map marker imply a positional accuracy of within a few feet, note that Google Maps is not inherently that accurate, and therefore this tool should not be used for legal purposes or anything beyond entertainment value.

      SOURCES:
      - US: Census Bureau
      - UK: Open Government License - Contains Office of National Statistics data, Ordnance Survey data ©Crown copyright and database right 2017. Open Data Lincese - Ordnance Survey of Northern Ireland.
      - Ireland: Open Data and Creative Commons License - Ordnance Survey Ireland
      - Australia: Incorporates Administrative Boundaries ©PSMA Australia Limited licensed by the Commonwealth of Australia under Creative Commons Attribution 4.0 International licence
      - New Zealand: Creative Commons Attribution 3.0 - Stats NZ
      - Canada: Open License - Boundary Files, 2016 Census; Statistics Canada Catalogue no. 92-160-X
      - Mexico: Instituto Nacional de EstadĂ­stica y GeografĂ­a (INEGI)
      - Switzerland: Swiss Federal Office of Topography

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