[S2000]

I like using WIKI for this. Search the towns on the train line. For example here is Stamford -

Large and distinctive companies
Citizens Communications (CZN) -- headquarters, 3 High Ridge Park; a provider of telephone, television and Internet access to rural areas and small- and medium-sized towns and cities in 23 states; it also runs a local exchange carrier service in the western states through a subsidiary, Electric Lightwave LLC subsidiary; 6,100 employees companywide; 170 in Connecticut; $2.2 billion in annual revenues; Maggie Wilderotter, CEO since November 2004

Crane Co. (CR) -- headquarters, 100 First Stamford Place; a diversified manufacturer of engineered systems ranging from vending machines to anti-skid brakes for aircraft; 10,400 employees, 90 in Connecticut; $2 billion in annual revenues; CEO Eric C. Fast

Conair Corporation -- , 1 Cummings Point Road; maker of blowdryers and other personal health care products, such as Jheri Redding and Rusk, and consumer electronic products, including telephones and Cuisinart products; the company is officially headquartered in East Windsor, New Jersey, but it is privately held by Leandro P. "Lee" Rizzuto, who maintains a home in lower Fairfield County near the Stamford office. Rizzuto is the 392nd richest American, with an estimated $925 million in assets, according to the Forbes magazine "Forbes 400" list. (Rizzuto, a cousin of former Yankees baseball player Phil Rizzuto, pleaded guilty to tax evasion in 2002. He was co-founder of the company with his father in 1959.)

Gartner Inc. (IT) -- 56 Top Gallant Road; provides research and analysis on the information technology sector; 3,700 employees comanywide; 730 of them in Fairfield County; $989 million in annual revenues; CEO Gene Hall

General Electric Capital Corp. -- 260 Long Ridge Road

General Re Corp. -- division of Berkshire Hathaway, 695 East Main St.; a holding company for global reinsurance and related operations. It owns General Reinsurance Corporation and is one of the largest reinsurers worldwide; 895 employees in county, 3,200 companywide; $10.5 billion in revenues in 2003; CEO Joseph P. Brandon

Hexcel Corp. (HXL) -- headquarters; develops and makes carbon fibers, industrial fabrics and lightweight, high-performance composite materials, and parts and structures used in commercial aerospace, space and defense, recreation and other industries; 4,455 employees, 35 of them in Connecticut; $1.2 billion in annual revenues; CEO David Berges

MXenergy (privately held) -- sells electricity and natural gas. The company's fixed-price one- to three-year contracts for homeowners and small businesses were a large part of the reason why the company grew 382.1 percent in revenue in the three years from 2002 to 2005. The company made the Inc. magazine "Inc. 500" list of fastest growing small companies in 2006, ranking No. 370. In 2005 the company had $326.1 million in annual revenue and 100 employees, according to Inc. magazine.

Odyssey Re Holdings Corp. (ORH) -- a global property-casualty reinsurance company, 80-percent-owned by Fairfax Financial Holdings Ltd. (NYSE: FFH) of Toronto; 600 employees, 300 of them in Connecticut; $2.6 billion in annual revenues; CEO Andrew A. Barnard

Outdoor Life Network -- (owned by Comcast) headquarters, 281 Tresser Blvd. (NFL studios are there.)

Pitney Bowes Inc. (PBI)-- headquarters, 1 Elmcroft Road; the world's biggest maker of postal meters and mailing equipment and provides mailing and delivery software and services to companies; 32,700 employees companywide, 3,500 in Fairfield County; $5.5 billion in annual revenues; CEO Murray Martin

SAC Capital Advisors LLC, a hedge fund run by Steven A. Cohen
Sempra Energy -- trading division

Silgan Holdings Inc. (SLGN) -- headquarters, 4 Landmark Square; a supplier of consumer goods packaging products with a 50 percent share of the U.S. metal food container market; 7,500 employees, 225 of them in Connecticut; annual revenues of $2.5 billion; Co-CEOs Anthony J. "Tony" Allott and D. Greg Horrigan

Star Gas Partners L.P. (SGU) -- headquarters, 2187 Atlantic St.; distributor of home heating oil, propane and other fuels in the Midwest and eastern U.S.; mostly owned by shareholders; 2,700 employees companywide; revenues of $1.2 billion; CEO Irik P. Sevin
Statoil ASA - North American headquarters, 1055 Washington Blvd.; Statoil ASA is Norway's largest oil and gas company.

Student Loan Corp. (STU) -- headquarters; originates, holds and services student loans; company is mostly owned by Citigroup; 550 employees, 30 of them in Connecticut; revenues of $1.5 billion; CEO Michael J. Reardon

Thomson Corp. -- operational headquarters; One of the largest companies in Canada, Thomson retains nominal headquarters there, but the company is run from its operational headquarters in Stamford, and if it were officially a U.S.-based company it would be in the Fortune 500; $8.7 billion in 2005 revenue;
Time Warner Cable -- headquarters of this division

UBS (UBS) -- U.S. headquarters, 677 Washington Blvd.; a financial services company; 4,000 employees in Fairfield County; The UBS trading floor in Stamford, Connecticut holds the Guinness World Record as the largest securities trading floor in the world. The 103,000 square-foot operation has 40 foot arched ceiling freeing it of columns or walls. The size of two football fields and home to 1,400 traders and staff who handle about $1 trillion worth of transactions a day. It is roughly 227 wide by 410 feet long.

Vineyard Vines (privately held) -- The company designs and sells ties, polo shirts, flip-flops and other products. It has a store on Martha's Vineyard and (in partnership with others) has opened stores in Greenwich, and Nantucket. In 2005 the company made the Inc. magazine "Inc. 500" list of fastest growing companies, placing at No. 202 with revenue growth of 547 over three years (2002 to 2004). In 2006, the company again made the list, this time at No. 217 with 569.4 percent growth in revenues over three years (from 2003 to 2005). Its 2005 revenues came to 23.8 million (up from 13.2 the year before) and 85 employees (up from 45 the year before), according to Inc. The company was founded in 1998.

World Wrestling Entertainment -- 1241 E. Main St.; headquarters of the company said to be the largest sports entertainment company in the world.

Xerox Corp. -- headquarters, 800 Long Ridge Road; a Fortune 500 company that makes and sells color and black-and-white printers, multifunction systems, photo copiers, digital production printing presses, and related consulting services and supplies;