Question: WXND-LP is locaed in Etna, New Hampshire, what is Etna's ZIP code?

Context paragraphs:
Flicksville, Pennsylvania: Flicksville is a village located in Northampton County, Pennsylvania, 75 mi west of New York City, in the Lehigh Valley region of Pennsylvania, United States.  It is part of Pennsylvania's Slate Belt and belongs to Washington Township.  Flicksville previously had a post office with a ZIP code of 18050; however, this ZIP code was retired in 2016 and the community is now served by the Bangor ZIP code of 18013.

Zip Code Rapists: Zip Code Rapists were an avant-garde band active in the 1990s.  The band was composed of guitarist John Singer and singer Gregg Turkington.  The band is known for their confrontational, deconstructionist, absurd live performances.  as well as their bizarre, more fleshed-out recordings.  During the group's fake break-up in 1994, Singer and Turkington formed competing spin-off bands, the Zip Code Revue and The Three Doctors Band, presumably attempts to siphon off Zip Code Rapists fans for themselves.  In 1996, after a Japanese tour with Faxed Head, the Zip Code Rapists ceased performing or recording.  Gregg Turkington has since gone on to perform as the anti-comedy personality Neil Hamburger.  John Singer continues to make music in Vermont.  The Zip Code Rapists reunited for a handful of shows in California and in Canada in 2005–2006, followed by a retrospective CD release on the Eabla label in 2009.  In 2015 they did a one-off show in Brooklyn, New York.

Grand Plaza I: Grand Plaza is a residential apartment building in Chicago.  The 57 story building was completed in 2003 at a height of 641 ft when measured from its decorative spires. Grand Plaza I is one of the tallest all-residential buildings in Chicago and contains 481 luxury apartment units.  Until July 1st, 2008, it was the tallest building in the Chicago ZIP Code 60610, the ZIP Code with the most high-rises in the city.  On July 1st, 2008, the building ended up being in a new ZIP Code: 60654.  That ZIP Code encompasses a small area, so the building is still the tallest in its ZIP Code.

Line Lexington, Pennsylvania: Line Lexington is an unincorporated community located in the Delaware Valley on Route 309 in Bucks and Montgomery Counties in Pennsylvania.  It is split between the Bucks townships of Hilltown and New Britain and the Montgomery township of Hatfield.  The whole village is in the North Penn School District and is part of the North Penn Valley region that is centered on the borough of Lansdale.  While it has its own post office with the ZIP code of 18932, portions use the Colmar zip code of 18915, the Chalfont zip code of 18914 or the Hatfield zip code of 19440.  It is served by SEPTA bus route 132 and the nearest regional rail stations are nearby in Colmar and Chalfont.  The Line Lexington telephone exchange uses area code 215.

Etna, Minnesota: Etna is an unincorporated community in Bloomfield Township, Fillmore County, Minnesota, United States.  Etna is located within ZIP code 55975 based in Spring Valley.

10048 (ZIP code): 10048 was the ZIP code assigned to the original World Trade Center complex in New York City.  It was discontinued following the September 11 attacks in 2001.  Years afterward, mail continues to be sent to 10048 by senders who have not updated their mailing lists.  The ZIP code is being kept active by the United States Postal Service (USPS).  It has not been assigned to 1 World Trade Center and other buildings planned for the World Trade Center site, which use the ZIP code 10007 instead.

WXND-LP: WXND-LP (107.3 FM) was a radio station licensed to serve Etna, New Hampshire, United States.  The station was owned by nDimension and served the Lebanon-Rutland-White River Junction area.

Hanover Town Library: The Hanover Town Library, also known as the Etna Library, is located at 130 Etna Road in Hanover, New Hampshire, United States.  It is a public library serving the Etna section of the town; the Classical Revival building it occupies was the first purpose-built library building in the town, and is listed on the National Register of Historic Places.  It is a modest brick building, designed by Dartmouth College professor Robert E. Fletcher and built in 1905.

Garnet Valley, Pennsylvania: Garnet Valley is an unincorporated community in Delaware County, Pennsylvania, United States.  The name was created by the United States Postal Service in late 2006 to allow residents of Bethel Township and Concord Township who were within the 19061 zip code and were part of the Garnet Valley School District to distinguish themselves from residents of Upper Chichester Township.  The default "city name" for the 19061 zip code is Marcus Hook; other acceptable names in the zip code include Trainer, Linwood, and Boothwyn.  The residents of Bethel Township and Concord Township sought a new postal identity because the zip code "city names" are often confused with actual municipal names.

Etna, New Hampshire: Etna, originally named "Mill Village", is a small unincorporated community within the town of Hanover, New Hampshire, in the United States.  It is located in southwestern Grafton County, approximately 3 mi east of Hanover's downtown and 2.5 mi south of the village of Hanover Center, on Mink Brook.  Etna has a separate ZIP code (03750) from the rest of Hanover, as well as its own fire station, church, and library.

Supporting paragraphs: WXND-LP Etna, New Hampshire
Answer: 03750