Editing Duarte, California (section)

===Modern era===
Two medical institutions were started in Duarte in the early part of the 20th century. In 1913, the Jewish Consumptive Relief Association started a tuberculosis sanitarium in the form of a small [[tent city]] on {{convert|40|acre|ha}} of land south of Duarte Road. This later evolved into the world-renowned [[City of Hope National Medical Center]], a recognized leader in fighting cancer and other catastrophic diseases. In 1930, a group of [[Carmelite]] nuns known as the [[Carmelite Sisters of the Most Sacred Heart of Los Angeles]] established what is now the Santa Teresita Rest Home, known until recently as Santa Teresita Medical Center. After decades as a full-service hospital, Santa Teresita was downgraded to "medical center" in the early 21st century, after financial problems, caused both by administrative missteps as well as the costs of providing medical coverage to the uninsured, forced the hospital to close its emergency room. Santa Teresita now operates as an "outpatient services only" facility.

In 1957, a dedicated group of community members, fearing annexation by neighboring cities, led a fight for incorporation. Indeed, parts of the original Rancho had already been annexed by neighboring Monrovia, Azusa, Irwindale, and Baldwin Park. At the same time, a rival group representing an affluent enclave in the foothills started a competing drive for incorporation and broke off to form the separate city of Bradbury. A 2001 ''[[Los Angeles Times]]'' article stated that their petition for incorporation arrived in [[Sacramento, California|Sacramento]] on August 22, 1957, "mere moments" before the petition that would have included what is now Bradbury in the city of Duarte. Still, many ties between the two communities remain in that they both form the Duarte Unified School District; they both share the same post office and the 91008 ZIP code; and they both share combined public services such as the [[Los Angeles County Sheriff's Department]] and [[Los Angeles County Fire Department]], and garbage pickup (provided by Burrtec Waste Services).

The original city logo was created by Bill Botts Sr. in 1957. It consisted of a double-circular seal, with the inner circle containing an adobe arch featuring the Rancho Azusa de Duarte "d" brand (inside the arch is the original date of the Rancho's establishment, 1841) while the outer circle features the year of Duarte's incorporation (1957). The current city logo was created in early 1982 to mark Duarte's 25th anniversary of cityhood.

Like many of its neighbors, modern Duarte is a [[bedroom community]]. The city of Duarte is geographically isolated from population centers to the east and south due to the [[San Gabriel River (California)|San Gabriel River]] and rock quarry operations in [[Irwindale]] and [[Azusa, California|Azusa]]. These factors have proven to be an ongoing economic challenge for local businesses as the city attracts little outside spending, and most residents spend their money elsewhere. Due to air quality and noise concerns, the city of Duarte has sought repeatedly to halt the expansion of neighboring quarry operations but has had no success against the monied interests behind the quarries and the neighboring city governments beholden to them. Still, over the past few decades, the city leadership has succeeded in bringing retail development to the western portion of Duarte.

In September 2010, ''[[Forbes]]'' magazine placed the ZIP code of 91008 at #1 on its annual list of America's most expensive ZIP codes, containing the parts of Duarte immediately north of neighboring Bradbury.<ref name=Ewalt>{{cite web | url=https://www.forbes.com/zipcodes/2010/zipspage.html?zip=91008&city=Duarte | title=Forbes Luxury Housing Index: #1 91008 Duarte, Calif. | last=Ewalt | first=David | work=[[Forbes]] | access-date=March 27, 2017 }}</ref><ref>{{cite web | url=https://www.forbes.com/2010/09/27/most-expensive-zip-codes-2010-lifestyle-real-estate-zip-codes-10-zips_land.html | title=America's Most Expensive ZIP Codes | last=Levy | first=Francesca | date=September 27, 2010 | work=[[Forbes]] }}</ref>