International Dark Sky Reserves ~ a public or private land possessing an exceptional or distinguished quality of starry nights and nocturnal environment that is specifically protected for its scientific, natural, educational, cultural, heritage and/or public enjoyment mission of a large peripheral area. The International Dark Sky Reserve consists of a core area meeting the minimum criteria for sky quality and natural darkness, and a peripheral area that supports dark sky values in the core and receives benefits from them as well. The International Dark Sky Reserve is formed through a partnership of multiple land owners and/or administrators that have recognized the value of the starry night through regulation and/or formal agreement and/or long term planning.

The IDSReserve program is the epitome of IDA's mission. Working to preserve a central core that is valuable because of its natural night, communities band together to create public awareness campaigns and conduct retrofits to restore the night sky. Each reserve shown below has gone above and beyond the requirements as stated in our International Dark Sky Reserve Guidelines.

Other Ordinances

Directory of Lighting Ordinances

To skip ahead, click below:

Note: Some of the links on this page are connected to files provided by each municipality.  If the links appear to be broken, the municipality may have adopted new legislation and inactivated their file.  Please notify This email address is being protected from spambots. You need JavaScript enabled to view it.

It is important to note that most statutes handle light pollution differently.  The following is a series of acts currently enforceable to the fullest extent of the written law.

Another source for research on codes in your area is, a company that provides free codes and regulations databases with easy search capabilities.  Or you may visit Cliff Haas' LiteLynx site, which also has a comprehensive list of light pollution ordinances.





New Hampshire
New Mexico

Czech Republic
  • Protection of the Atmosphere Act, June 2002 (note: this act is a declaration only and does not contain enforcement principals)  An English translation, by IDA Czech Republic, of the Act is available here >>
United Kingdom




Due to the large success of increasing municipal lighting ordinances we have been unable to successfully compile a list of live links to all of the most recent ordinances.  We encourage you to visit Cliff Haas' LiteLynx, conduct a search on, or contact you local municipality for information.