R.L. Polk & Co.
R.L. Polk & Co. was a U.S. provider of automotive, business, marketing, and vehicle-registration data.
Last updated October 14, 2026
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Overview
R.L. Polk & Co. began in Detroit in 1870 as a publisher of business directories and became one of the longest-established information companies serving the automotive sector. Founded by Ralph Lane Polk, the company initially compiled city and business directories containing resident, business, address, property, banking, and postal information. Its early publications transformed scattered local records into commercially useful reference products for businesses and institutions. By the early twentieth century, Polk was producing directories and gazetteers covering numerous American states and parts of Canada, and it had accumulated a large publishing operation that remained associated with local and business information for decades. The company’s decisive strategic shift came from its move into automotive statistics. A 1921 discussion between Ralph Lane Polk II and Alfred P. Sloan, then associated with General Motors, helped prompt Polk to develop impartial statistical reporting on cars and trucks in operation. In 1922, Polk issued its first passenger-car registration report, covering 58 makes and approximately 9.2 million passenger automobiles on American roads. This activity established the foundation for a specialized automotive information business based on registration records, vehicle populations, market measurement, and lifecycle analysis. Polk expanded its data-gathering and analytical capabilities throughout the twentieth century. It pioneered electronic punch-card tabulation between 1951 and 1958 and later supplied recurring statistics on passenger vehicles, boats, business aircraft, motorcycles, commercial trailers, and recreational vehicles. In 1976, it introduced the National Vehicle Population Profile, a major vehicle-population database. Over time, Polk developed products for manufacturers, dealers, aftermarket companies, insurers, marketers, and other organizations that needed to understand vehicle ownership, replacement cycles, market share, customer prospects, and regional demand. During the 1990s and 2000s, Polk broadened its international and commercial reach through acquisitions, alliances, and new information services. Its offerings included PolkInsight, Polk Dealer Marketing Manager, Polk Vehicle Lifecycle System, Polk CrossSell Reports, Polk Total Market Predictor, Polk Canada Net, and related marketing and inventory tools. In 1993, its Canadian activities were combined with Blackburn Marketing Services to form Blackburn/Polk Marketing Services Inc.; the company also acquired a minority interest in Carfax. Polk later completed its acquisition of the Blackburn/Polk operations, acquired European operations from Automatic Data Processing’s MSS division, and purchased or invested in other marketing and automotive-data businesses. Carfax became one of Polk’s most significant holdings. Polk initially held a 35 percent interest and completed the acquisition of the company in 1999. Carfax used vehicle-identification numbers and information from multiple sources to produce vehicle-history reports for used-car buyers and industry participants. Polk data represented a substantial part of the information base supporting those reports. Polk also expanded into vehicle pricing and specifications through its majority interest in ROADTODATA in 2007 and pursued partnerships such as its 2010 relationship with Citytwist. The company sold several non-core consumer-information and directory businesses to Equifax in 2000, concentrating its portfolio more heavily on automotive information. IHS Markit announced a purchase of R.L. Polk & Co. in 2013 for approximately $1.4 billion, bringing Polk and Carfax under IHS control. The transaction ended Polk’s independent corporate operation while preserving its automotive information activities within the acquiring group. IHS Markit was subsequently acquired by S&P Global in 2022, placing the former Polk businesses within S&P Global’s broader financial and business-information por…
History
R.L. Polk & Co. was established by Ralph Lane Polk in Detroit in 1870. Its first business was directory publishing: the company gathered and organized names, addresses, businesses, properties, banks, and postal information into reference volumes used by commercial and public audiences. A directory issued in 1872 listed the residents and addresses of Evansville, Indiana, together with post offices in nine states. Polk continued adding city, business, bank, and state gazetteer directories, eventually becoming a substantial North American directory publisher. In the early twentieth century, Polk’s publications covered many U.S. states and parts of Canada. The directories generally combined alphabetical listings with property information arranged by street address, making them useful for sales, credit, prospecting, and local research. The business reportedly published about 1,000 directories by 1960. Affiliates included the Polk-Husted Directory Co. of Oakland, California. Polk entered automotive information after a 1921 conversation between Ralph Lane Polk II and Alfred P. Sloan. Sloan’s interest in impartial statistics about cars and trucks in operation encouraged Polk to apply its directory and data-collection capabilities to the vehicle market. In 1922, the company published its first Passenger Car Registration Report. The report covered 58 makes and approximately 9.2 million passenger automobiles, establishing a long-running business in vehicle registrations and market statistics. The company adopted electronic punch-card tabulation from 1951 to 1958 and broadened its reporting beyond passenger cars. By 1956, its services included recurring statistics for boats, business aircraft, motorcycles, commercial trailers, and recreational vehicles. The 1976 launch of the National Vehicle Population Profile marked another important step in the development of structured vehicle-population data. Polk’s later business increasingly centered on automotive intelligence and marketing services. Its products supported manufacturers, dealers, insurers, aftermarket companies, and other businesses with vehicle counts, market forecasts, customer segmentation, ownership and lifecycle analysis, dealer marketing, cross-selling, and inventory planning. Named offerings included PolkInsight, Polk Dealer Marketing Manager, Polk Vehicle Lifecycle System, Polk CrossSell Reports, Polk Total Market Predictor, Polk Canada Net, and The Ultimate Perspective. The 1990s brought international expansion and portfolio restructuring. In 1993, Polk combined its Canadian activities with Blackburn Marketing Services to create Blackburn/Polk Marketing Services Inc. and acquired a 35 percent interest in Carfax. It formed an alliance with Marketing Systems GmbH and acquired a substantial minority interest in The Ultimate Perspective in 1995. Polk completed the acquisition of the Blackburn/Polk operations in 1996, acquired the MSS division of Automatic Data Processing’s European operations in 1997, and sold Advertising Unlimited in 1999. Polk completed the acquisition of Carfax in 1999. Carfax compiled vehicle histories from multiple sources using vehicle identification numbers, producing reports containing information such as prior use, odometer records, ownership history, and other factors relevant to used-vehicle transactions. Polk’s data supplied a substantial portion of the information used by Carfax. In 2000, Polk sold its Consumer Information Solutions businesses, including direct marketing, data-information, city-directory, Compusearch, and Prospects Unlimited operations, to Equifax. The divestiture reinforced Polk’s focus on automotive data while the company continued developing products such as Garage Predictors and Polk Canada Net. Polk also acquired Marketing Systems Group. Ralph Lane Polk II was inducted into the Automotive Hall of Fame in 2001 and the Direct Marketing Association Hall of Fame in 2002. Polk introduced the Polk Inventory Efficiency Award in 2005, acquired a majority interest in ROADTODATA in 2007, and partnered with Citytwist in 2010. IHS Markit announced its acquisition of R.L. Polk & Co. in 2013 for approximately $1.4 billion, describing Polk’s automotive information services as complementary to its own information markets. IHS Markit assumed control of Polk and Carfax, ending Polk’s independent corporate existence. S&P Global later acquired IHS Markit in 2022, making S&P Global the ultimate owner of the businesses inherited from Polk.
- 2022
Ultimate ownership transferred to S&P Global
[1]S&P Global acquired IHS Markit, becoming the ultimate owner of the former Polk businesses.
- 2013
Acquired by IHS Markit
[1]IHS Markit acquired Polk and Carfax in a transaction announced at approximately $1.4 billion.
- 2007
ROADTODATA majority interest acquired
[1]Polk expanded its automotive data portfolio through a majority interest in ROADTODATA.
- 2000
Consumer-information units sold to Equifax
[1]Polk divested several consumer-information and directory operations to Equifax.
- 1999
Carfax acquisition completed
[1]Polk acquired the remaining interest in Carfax and became its 100 percent owner.
- 1993
Canadian operations combined with Blackburn Marketing
[1]Polk combined its Canadian activities with Blackburn Marketing Services and acquired a minority interest in Carfax.
- 1976
National Vehicle Population Profile launched
[1]Polk introduced the National Vehicle Population Profile, a vehicle-population reporting service.
- 1951
Electronic tabulation introduced
[1]Polk pioneered the use of electronic punch-card tabulation equipment during the 1951–1958 period.
- 1922
First automotive registration report
[1]The company issued its first Passenger Car Registration Report, beginning its major automotive-data business.
- 1907
Expansion of state gazetteer publishing
[1]Polk was publishing business gazetteers covering numerous U.S. states and areas of Ontario.
Products and positioning
A business-to-business information and analytics provider focused on automotive manufacturers, dealers, insurers, marketers, aftermarket companies, and related organizations. Polk positioned its products around authoritative vehicle data, market measurement, customer targeting, ownership analysis, and decision support.
Directory publishing · 1870
Business and city directories
Polk’s original business consisted of directories listing residents, businesses, addresses, properties, banks, and postal facilities. These publications served as reference tools for local commerce, credit, sales prospecting, and market research. The company issued city directories, state gazetteers, and bank directories across the United States and Canada.
Automotive data · 1976
National Vehicle Population Profile
Introduced in 1976, the National Vehicle Population Profile provided structured information about vehicles in operation. It supported analysis of vehicle populations by market and geography and helped automotive organizations estimate installed fleets, replacement opportunities, and related demand.
Automotive market intelligence
PolkInsight
PolkInsight was part of the company’s business-to-business automotive intelligence portfolio. Polk used registration, vehicle-population, and market data to help automotive clients evaluate market conditions, vehicle ownership patterns, and commercial opportunities.
Dealer marketing software and data
Polk Dealer Marketing Manager
This offering supported automotive dealers with marketing and customer-targeting activities. Its role within Polk’s portfolio was to connect vehicle and market information with dealer prospecting, customer outreach, and local sales planning.
Vehicle lifecycle analytics
Polk Vehicle Lifecycle System
The Vehicle Lifecycle System addressed the changing status of vehicles over time, from registration and ownership through replacement and disposal. It was intended to help manufacturers, dealers, insurers, and aftermarket businesses identify lifecycle events and commercial opportunities.
Automotive marketing analytics
Polk CrossSell Reports
Polk CrossSell Reports provided information intended to support cross-selling and customer-development decisions. The service formed part of Polk’s broader effort to translate vehicle ownership and market data into targeted marketing opportunities.
Market forecasting
Polk Total Market Predictor
Polk Total Market Predictor was designed to help automotive businesses estimate market potential and future demand. It complemented Polk’s registration and vehicle-population databases with forecasting-oriented analysis for planning and sales decisions.
Vehicle-history information · 1999
Carfax
Carfax compiled vehicle-history reports using vehicle identification numbers and data from multiple sources. Reports could include prior vehicle use, odometer records, ownership information, and other details relevant to used-vehicle transactions. Polk first acquired a minority interest and completed the acquisition in 1999.
Vehicle pricing and specifications data · 2007
ROADTODATA
ROADTODATA supplied automotive pricing and specifications information. Polk acquired a majority interest in the business in 2007, adding product and pricing data to its established registration, market, and vehicle-population capabilities.
Marketing campaigns
- 2005Polk Inventory Efficiency Award
United States · Automotive aftermarket
Polk introduced an award recognizing aftermarket companies that demonstrated improvements in inventory efficiency and related operating processes.
Outcome. The award positioned Polk as an active participant in promoting data-driven operational improvement in the automotive aftermarket.
Brand decisions
2022
Transfer of ultimate ownership to S&P GlobalM&ABackground
IHS Markit, Polk’s acquiring company, became part of S&P Global.
Action taken
S&P Global acquired IHS Markit and became the ultimate owner of the former Polk businesses.
Aftermath
The former Polk operations were incorporated into S&P Global’s wider information and analytics portfolio.
2013
Sale to IHS MarkitM&ABackground
Polk had developed a broad automotive information portfolio that included vehicle data, marketing services, and Carfax.
Action taken
IHS Markit acquired R.L. Polk & Co. and assumed control of the Polk and Carfax divisions.
Aftermath
Polk ceased to operate as an independent company and its capabilities became part of IHS Markit’s information-services business.
announced transaction value. approximately 1.4 billion USD (2013)
2000
Divest non-core consumer-information operationsStrategyBackground
Polk operated directory, direct-marketing, data-information, and other consumer-information units alongside its automotive activities.
Action taken
The company sold its Consumer Information Solutions businesses and related Canadian units to Equifax.
Aftermath
The divestitures sharpened Polk’s emphasis on automotive information, analytics, and marketing services.
1999
Complete acquisition of CarfaxM&ABackground
Polk had previously held a 35 percent interest in Carfax together with the Blackburn Group.
Action taken
Polk acquired the remaining interest and took full ownership of Carfax.
Aftermath
The transaction strengthened Polk’s position in vehicle-history information and connected Carfax’s consumer-facing reports with Polk’s automotive data resources.
1922
Enter automotive registration statisticsStrategyBackground
After a 1921 conversation involving Ralph Lane Polk II and Alfred P. Sloan, Polk identified an opportunity to provide impartial information about cars and trucks in operation.
Action taken
The company published its first Passenger Car Registration Report and built a long-term automotive information business.
Aftermath
Automotive data became the central strategic direction of the company and eventually displaced directory publishing as its defining activity.
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