The history of Bridgeport, Connecticut was, in the late 17th and most of the 18th century, one of land acquisitions from the native inhabitants, farming and fishing. From the mid-18th century to the mid-19th century, Bridgeport's history was one of shipbuilding, whaling and rapid growth. Bridgeport's growth accelerated even further from the mid-19th century to the mid-20th century with the advent of the railroad, Industrialization, massive immigration, labor movements until, at its peak population in 1950, Bridgeport with some 159,000 people was Connecticut's second most populous city. In the late 20th century, Bridgeport's history was one of deindustrialization and declining population, though it overtook Hartford as the state's most populous city by 1980.

Pre-colonial period Much of the land that became Bridgeport was originally occupied by the Pequonnock Indians of the Paugussett nation. One village consisted of about five or six hundred inhabitants in approximately 150 lodgings.

Colonial period Other than Black Rock and Parts of Brooklawn which were originally part of the township of Fairfield, Bridgeport was originally a part of the township of Stratford. The first English settlement on the west bank of the mouth of the Pequonnock River was made in about 1665 and was called Pequonnock. (Some sources have the first settlement as early as 1639 or 1659.) This village was renamed Newfield sometime before 1777. More people settled further inland and to the West and the area collectively became known as Fairfield Village in 1694, a name that was officially changed to Stratfield in 1701, likely due to its location between the already existing towns of Stratford and Fairfield. The ecclesiastical history of Bridgeport begins with the formation of the Stratfield Ecclesiastical Society in 1678 for the purpose of forming a school, with reference to a pastor ministering in Stratfield as early as 1688; and the establishment of a Congregational Church in 1695.

Late 18th century and 19th century During the American Revolution, Bridgeport was a center of privateering. Captain David Hawley of Stratfield brought a number of prizes into Black Rock Harbor. In 1800, Newfield village on the west bank of the Pequonnock was chartered as the borough of Bridgeport, and, in 1821, the township of Bridgeport, including more of Stratfield, was incorporated. Finally, Bridgeport was chartered as a city in 1836.

Bridgeport's early years were marked by a reliance on fishing and farming, much like other towns in New England. The city's location on the deep Newfield harbor (mouth of the Pequonnock) fostered a boom in shipbuilding and whaling in the mid-19th century. To aid navigation, Bridgeport Harbor Light was constructed in 1851 and reconstructed in 1871. Bridgeport's growth accelerated after the opening of a railroad to the city in 1840. Bridgeport was connected by rail first to New Milford in 1840, then Waterbury and New Haven in 1848, and New York City in 1849.

In the 1820s, about the time Connecticut abolished slavery, free blacks started settling in a neighborhood that became known as "Little Liberia", whose oldest surviving buildings date to 1848 and are Connecticut's oldest African-American houses. Per the 1840 Census, Bridgeport's population of "colored persons" totaled 148, or 4.49% of its total population.

In the 1830s, East Bridgeport was still largely farmland but the construction of foot and general traffic bridges over the Pequonnock in the 1840s and 1850s opened the area to development and it was not long before the area became a major area for industry.

Abraham Lincoln's visit In February 1860, Abraham Lincoln came east to speak at Cooper Union in New York City, where on February 27 he impressed eastern Republicans as an intelligent, dignified statesman and gained support in his bid for the presidential nomination. Since the speech went over well, he made several others (all similar to his Cooper Union speech) in Connecticut and Rhode Island, traveling by train to various cities. After stopping in Providence, Norwich, Hartford, Meriden and New Haven, he made his final speech in the evening of Saturday, March 10, in Bridgeport.Holzer, Harold, Lincoln at Cooper Union, (Simon & Schuster: New York), 2004 Chapter 8: "Unable to Escape This Toil," p. 201

His train was scheduled to stop at 10:27 a.m. in Bridgeport, and he likely met with Republican leaders. "He was entertained at the home of Mr. Frederick Wood at 67 Washington Avenue, and it is said that there he had his first experience with New England fried oysters," wrote Nelson R. Burr in Abraham Lincoln: Western Star Over Connecticut. "Another tradition is that while he stayed in Bridgeport a little girl, Mary A. Curtis of Stratford, presented him with a bouquet of flowers and a bunch of salt hay from the Stratford meadows. ... Where the flowers came from at that season, and how the hay could be cheerfully green, is not explained."Burr, Raymond F., Abraham Lincoln: Western Star Over Connecticut, Lithographics Inc., Canton, Connecticut (no year given), pages 1 and 15; book contents reprinted by permission of the Lincoln Herald, (Harrogate, Tennessee) Summer, Fall and Winter, 1983 and Spring and Summer, 1984

Lincoln spoke in Washington Hall, an auditorium at what was then Bridgeport City Hall (now McLevy Hall), at the corner of State and Broad streets. Not only was the largest room in the city packed, but a crowd formed outside made up of people who could not get in. He received a standing ovation before taking the 9:07 p.m. train that night back to Manhattan. A plaque now stands at the site in Bridgeport where he gave the speech.

P.T. Barnum The city's most famous resident has been circus-promoter and once-mayor P.T. Barnum, who built four houses in the city (Iranistan and Waldemere were the most renowned) and housed his circus in-town during winters. The Barnum Museum, housed in a building that was originally contracted for construction by P. T. Barnum himself, has an extensive collection related to P. T. Barnum and the history of Bridgeport. In 1949, Bridgeport initiated a Barnum Day parade which has grown into an annual multi-day festival. Barnum, as well as many other notables, is buried in Mountain Grove Cemetery, Bridgeport, in the park-like setting he designed.

Expansion of parks The of Washington Park in East Bridgeport were first set aside as a park in 1851 by William H. Noble and P. T. Barnum, with the land being deeded to the city in 1865. As the city rapidly grew in population, residents recognized the need for more public parks. In 1863, The Standard urged the creation of one or more public parks in the city and a movement to create a park along Long Island Sound and Black Rock Harbor began. By 1864, Barnum and other residents had donated approximately to create Seaside Park, gradually increased to about by 1884. In 1878, James W. Beardsley, a wealthy farmer, donated over of hilly, rural land bordering on the Pequonnock River with a distant view of Long Island Sound to the city of Bridgeport on condition that "the city shall accept and keep the same forever as a public park...." In 1881, the city contracted Frederick Law Olmsted, famous for creating New York City's Central Park, to create a design for Beardsley Park. Olmsted described the existing land as "pastoral, sylvan and idyllic" and, in 1884, delivered his plan for a simple, rural park for the residents to enjoy: "[The land donated by Beardsley] is thoroughly rural and just such a countryside as a family of good taste and healthy nature would resort to, if seeking a few hours' complete relief from scenes associated with the wear and tear of ordinary town life.... It is a better picnic ground than any possessed by the city of New York, after spending twenty million on parks.... The object of any public outlay upon it should be to develop and bring out these distinctive local advantages, and make them available to extensive use in the future by large numbers of people." Bridgeport's parks were not all just for picnics and promenades. Newfield Park was the home of a minor league baseball team, the Bridgeport Orators who won their league's championship in 1904. Over time, more parks and attractions were added including Beechwood Park, a zoo established in a portion of Beardsley Park and Pleasure Beach, home to a popular amusement park for many years.

Late 19th century Bridgeport annexed Black Rock and its busy harbor in 1870. The annexation added Black Rock Harbor Light to the city's navigation aids and, in 1874, Penfield Reef Light was soon added on the south side of Black Rock harbor. Bridgeport harbor remained active and Tongue Point Light was constructed in 1895 to mark its west boundary.

In the late 19th century, Bridgeport became the county seat of Fairfield County. County government was abolished in Connecticut in 1960, but the Fairfield County Courthouse built in 1888 still stands as testimony to that time in Bridgeport's history.

Early 20th century In 1902, rail traffic was simplified with the addition of the Pequonnock River Railroad Bridge. Trolley service also came to Bridgeport and, in 1910, a major repair and storage facility, the Connecticut Railway and Lighting Company Car Barn, was constructed in downtown Bridgeport. +Historical population of Bridgeport18101,08918201,500 18302,80018404,57018507,560186013,299187019,835188029,148189048,866190070,9961910102,0541920143,5551930146,7161940147,1211950158,7091960156,7481970156,5421980142,5461990141,6862000139,5292009137,298 (est.)

Industrial and commercial growth The city rapidly industrialized in the late-19th century, and became a manufacturing center producing such goods as the famous Bridgeport milling machine, brass fittings, carriages, sewing machines, saddles, and ammunition. Some employers took steps beyond paying wages for the benefit of their employees, such as the Warner Brothers Corset Company which built the Seaside Institute as a social and educational facility for its women workers.

The New York sporting goods firm of Schuyler, Hartley & Graham selected Bridgeport for the site of their Union Metallic Cartridge Company ammunition factory in 1867. The factory became headquarters of Remington UMC in 1912. With the start of World War I in Europe in 1914, Bridgeport became a new world arsenal some called "the Essen of America" and Bridgeport's population exploded, growing by nearly 50 percent in a 20-month period. After receiving an order from the Russian Empire in 1915 for one million rifles with 400,000,000 cartridges, Remington UMC built a factory complex of thirteen buildings with 80 acres of floor space; and hired 1,500 new workers per month until 17,000 were engaged in arms production. The Russian order was nearing completion when the Russian Revolution deposed Czar Nicholas II and refused to pay for the rifles and ammunition. The factory complex exceeded the needs of Remington UMC after Armistice Day, and was used by General Electric after 1920.

By 1930 Bridgeport was a thriving industrial center with more than 500 factories and a booming immigrant population. World War II provided a further boost to the city's industries. Famous factories included Wheeler & Wilson, which produced sewing machines and exported them throughout the world, Remington UMC, Bridgeport Brass, General Electric Company, American Graphophone Company (Columbia Records), Warner Brothers Corset Company (Warnaco) and the Locomobile Company of America, builder of one of the premier automobiles in the early years of the century. The city was home to the Frisbie Pie Company from 1871 to 1958, and therefore it has been argued that Bridgeport is the birthplace of the frisbee. In another "first", Bridgeport had the first dental hygiene school in the country, opened in 1913 by Dr. Alfred Fones with a first class of 34 women.