[6] U.S. Route 13 (Dupont Highway) serves as the main north–south road in Harrington, heading north toward Dover and south toward Salisbury, Maryland.

Delaware Route 14 serves as the main east–west road in Harrington, heading west toward Denton, Maryland and east toward Milford.

[9] As of 2019, the former Pennsylvania Railroad (PRR) tower adjacent to the Harrington depot that at one time manually controlled the junction's switches and signals is now a preserved heritage item along with an adjacent PRR caboose in its original Tuscan Red color.

Into the 1950s, the PRR's Del-Mar-Va Express steam powered passenger train that ran between Philadelphia, Pennsylvania and Cape Charles, Virginia stopped at Harrington.

The fair has been a venue for top national entertainment in recent years with acts such as Taylor Swift, Reba McEntire, Carrie Underwood, Little Big Town, Gladys Knight and Brad Paisley among many more artists who have performed on the M&T Bank Grandstand stage.

Despite the town's diminutive size, some of Harrington's most famous residents have been the horses, including three recent Dan Patch Award honorees.

In 2004, Rainbow Blue and 2015 Wiggle It Jiggleit both received that distinguished title of Horse of the Year and in 2019, Shartin N accomplished the impressive feat.

Amidst Shartin's ascent, yet another Harrington horse, Lather Up, was making headlines as he equaled harness racing's all-time fastest time of 1:46 in July 2019 at the Meadowlands Racetrack in New Jersey.

Coincidentally, Lather Up was stabled 4 miles to the east of Harrington Raceway at George Teague Jr's farm, while Shartin N's training base was 4 miles west of the racetrack at the farm of Jo Ann Looney and Jim King Jr.

He was even on the cover of the July 23, 1956 Sports Illustrated, with the headline, Adios Harry: World's Fastest Pacer!

In 2021, yet another horse hailing from Harrington was making headlines - as Lyons Sentinel was ranked the #1 in the country as of October 5.

The town post office contains a wax tempera mural, Men Hoeing, painted in 1941 by Eve Salisbury.