.
The best list I found covering Los Angeles is on a website run by a real estate agent (Tony Lewis) whose hobby it seems is collecting data like this (to promote his business). Some of these are free shows and others cost up to $100 (like the Hornblower dinner and cruise spectacular in Newport -- two boats, which are already sold out). Lewis has embedded links for each venue listed so you can go to his website and just click on the links to see the venue details. Very nice!
Source:
http://www.tonylewis.com/professional23.shtml 4th of July Fireworks Show & Events 2014
Santa Clarita, Los Angeles & Southern California"Like" to Bring Back "4th of July Fireworks" Six Flags Magic Mountain
Santa Clarita Fireworks Show at the Westfield Valencia Town Center Mall
Six Flags Magic Mountain "Celebrate 4th of July Weekend" 2014
Santa Clarita "4th of July Parade 2014" Old Town Newhall
William S. Hart "4th of July Parade" Newhall at Hart High School
Castaic Lake "4th of July 2014" Cancelled due to water level
Valencia & SFV "Open Table Dinner Reservations" 4th of July 2014
Acton "4th of July Parade 2014" Rock & Roll Acton Style
Hollywood Bowl "Steve Martin & the Steep Canyon Rangers" & Fireworks 2014
La Crescenta, Ca. "Crescenta Valley Fireworks" 4th of July 2014
Pasadena at the Rose Bowl "AmericaFest" 4th of July 2014
Burbank at the Starlight Bowl "July 4th Independence Day Celebration" July 4, 2014
Moorpark "3rd of July Fireworks Extravaganza" July 3, 2014
Simi Valley "4th of July Festival & Fireworks Extravaganza" July 4, 2014
Simi Valley Reagan Library "Annual 4th of July Celebration" a free event 2014
Fillmore & Western Railway Co. "Firecracker Dinner Train 6:30 9:45 PM" 4th of July 2014
Fillmore "Sespe Creek Car Show 9AM - 3PM" 4th of July 2014
Lancaster at the AV Fairgrounds "Hot! Hot! Hot!" 4th of July Extravaganza 2014
Marina Del Rey "4th of July Fireworks Celebration" 2014
Houston Astros vs Anaheim Angels at the Big A 4th of July 2014
Buena Park at "Knott's Berry Farm" 4th of July Fireworks 2014
Huntington Beach "110th Huntington Beach Waves of Freedom" 4th of July 2014
Redondo Beach "Happy Birthday America" at Seaside Lagoon 4th of July 2014
Long Beach at Aquarium of the Pacific "July 4th Late Night & BBQ" & Fireworks 2014
Long Beach Queen Mary "All American 4th of July" & Fireworks 2014
City of Calabasas "4th of July Celebrations" July 4, 2014
Ventura 30th Annual 4th of July Street Fair Ventura" Downtown 2014
Channel Island Annual Run & Fireworks Show July 4, 2014
Santa Barbara "4th of July 2014" Events, Shows, Parades & Fireworks
Pomona at Fairplex "Kaboom! Monster Trucks & Fireworks Motocross 8PM" 4th of July 2014
Rancho Cucamonga "4th of July Fireworks Spectacular" July 4, 2014
Studio City "All you need is Love" 4th of July Celebration"
Culver City "at West L. A. College 4th of July Fireworks Show
Woodland Hills at Warner Center Park "Fireworks Extravaganza 4th of July 2014
"Pacific Palisades "Pacific Palisades Fourth of July Parade" 2014
Pacific Palisades "Palisades Rock the 4th" 4th of July 2014 Concert & Fireworks
Los Angeles County"Fireworks Show"4th of July 2014
Ventura County "Fireworks, Parades & Events" 4th of July 2014
Orange County "4th of July Fireworks Shows & Events" 2014
Catalina Island "4th of July Music Festival" 2014
Big Bear Lake "Big Bear Lake California 4th of July Fireworks Show" Rated Best in Ca. 2014
Newport Beach "4th of July Newport Beach" with KC & the Sunshine Band July 4, 2014
Newport Beach "Hornblower "July 4th Dinner Cruise & Fireworks at Sea" 2014
Balboa Island "Old Glory Boat Parade" 2014
Dana Point "4th of July Fireworks Spectacular" 9AM - 11PM 2014
San Diego Fireworks Shows
Pismo Beach "4th of July Fireworks on the Pier & Concert" 2014
Carmel "12th Annual 4th of July Celebration" July, 4, 2014
Carlsbad at Legoland "Red, White & Boom!" July 4, 2014
San Diego & Surrounding Area 4th of July Fireworks Shows & Events 2014
Monterey 4th of July Celebration July 4, 2014
South Lake Tahoe "Lights on the Lake 4th of July 2014" (Dani & My Favorite!)
San Francisco Pier 29 "4th of July Celebration at the Pier" 2014"
Legal Fireworks Sales in Fillmore begin June 28, 2014
California Cities with Legal "Fireworks" Listed by County"
Events 4th of July Weekend 2014
Musical Ghost "Pantages Theater Los Angeles July 5, 6, 2014
Los Angeles Angles vs Houston Astros July 3, 4, 5, 6, 2014
Cher with Cindy Lauper "Ontario, California July 5, 2014
Big Bad Voodoo Daddy Irvine, California July 4, 2014
Kiss with Def Leppard "Irvine, California July 5, 2014
Grand Funk Railroad "Del Mar Fairgrounds July 5, 2014 (includes Fair Entry)
San Diego County Fair "at the Del Mar Fairgrounds July 4th Weekend
"""
[Apparently Tony Lewis isn't very diligent at "opening and closing quotation" marks.]