At Phantom Fireworks of Upland in Chester, shoppers like Greg Field of Blackwood, New Jersey, are getting ahead of the holiday crowds.
"Being patriotic, celebrating the 4th, and it's fun to blow things up and watch it go into the sky at nighttime," Field said.
His daughter, Katie Frenette, said the family's plans are bigger than usual.
"We do it every year, but it's going to be even bigger because it's 250," Frenette said.
The store is preparing for increased demand tied to America's 250th birthday. Manager Dylan Stamm said the customer base is expanding.
"Notice a lot of new customers that wouldn't typically celebrate with fireworks coming in, so that seems to be the trend as well," Stamm said.
Stamm said the store carries products for a wide range of budgets, from sparklers to larger, boxed displays costing up to $500. He described some of the higher-end options as "multi-shot firework shows in a box," and noted regulations such as a "maximum amount of powder to 60 grams per shot."
As sales increase, safety remains a top concern, particularly for first responders.
At the Chester City Fire Department, firefighters say calls often rise around the holiday.
"Typically, we run more than 5-10 calls in a night. A lot of brush fires, trash fires, that kind of stuff, smoke in the area investigations," said Deputy Fire Chief Christopher McBreen.
Firefighters recommend setting off fireworks in a flat, open area away from buildings and trees and keeping at least 150 feet back from aerial fireworks.
McBreen emphasized child safety.
"Anytime there's children involved that they be supervised, and do not let young children light them themselves," McBreen said.
Back at Phantom Fireworks, Field said safety is also his priority.
"Come home with all my fingers intact," he said.
Firefighters also advise keeping a bucket of water and an attached hose nearby when setting off personal fireworks displays.