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Area code 940

area code for Wichita Falls and Denton, Texas, United States

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionFeb 27, 2026
Entity authorityQ3150314
Source-derived summary

Area code 940 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Texas in the Wichita Falls and Denton areas. It was created on July 7, 1997, in a split from area code 817.

Service area

Counties:

Archer, Baylor, Childress, Clay, Cooke, Cottle, Denton, Foard, Grayson, Hardeman, Haskell, Jack, Knox, Montague, Palo Pinto, Parker, Stonewall, Throckmorton, Wichita, Wilbarger, Wise, and Young

Towns and cities:

Alvord, Archer City, Argyle, Aubrey, Bellevue, Benjamin, Bluegrove, Bowie, Boyd, Bridgeport, Bryson, Burkburnett, Byers, Cee Vee, Chico, Childress, Chillicothe, Corinth, Crowell, Decatur, Dennis, Denton, Electra, Era, Forestburg, Gainesville, Gordon, Goree, Graford, Graham, Greenwood, Harrold, Haskell, Henrietta, Holliday, Iowa Park, Jacksboro, Jermyn, Justin, Kamay, Knox City, Krum, Lantana, Lakewood Village, Lake Dallas, Lindsay, Little Elm, Loving, Megargel, Millsap, Mineral Wells, Mingus, Montague, Muenster, Munday, Myra, Newark, Newcastle, Nocona, O'Brien, Oak Point, Oklaunion, Old Glory, Olney, Palo Pinto, Paradise, Perrin, Petrolia, Pilot Point, Ponder, Poolville, Quanah, Ringgold, Rochester, Rosston, Rule, Saint Jo, Sanger, Santo, Scotland, Seymour, Sheppard Air Force Base, Slidell, South Bend, Sunset, Tell, Throckmorton, Tioga, Valley View, Vernon, Weinert, Whitt, Wichita Falls, Windthorst and Woodson

Ten-digit dialing

Prior to October 2021, area code 940 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021.

See also

List of Texas area codes

"Area Code Maps". North American Numbering Plan Administrator.

Editorial summary

The public source identifies “Area code 940” as area code for Wichita Falls and Denton, Texas, United States. This brief keeps that definition visible, then builds a research path around Area, code and area.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1997, 2021, 2020—that can be checked directly. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with Area, code and area providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Area code 940”, the useful work is to connect “area code for Wichita Falls and Denton, Texas, United States” to the records capable of establishing context and consequence.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Feb 27, 2026. The linked authority identifier is Q3150314. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1997, 2021 and 2020.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
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The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Area code 940”, its source revision and the description used here.
  2. Expand the search: follow Area code 940 primary sources, Area code 940 archive and Area research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Area code 940”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
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Source & attribution

This entry incorporates text from Area code 940” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.