U.S. Steel Headquarters & Corporate Office

About U.S. Steel

United States Steel Corporation, commonly known as U.S. Steel, was formed in 1901 through the consolidation of major American steel businesses led by industrial and financial figures including J.P. Morgan and Andrew Carnegie’s steel interests. The creation of the company produced one of the largest industrial corporations of its era and established U.S. Steel as a central participant in the growth of American manufacturing, infrastructure, transportation, construction, and defense. Pittsburgh became the company’s corporate home and remains deeply connected with U.S. Steel’s identity more than a century later.

Today, U.S. Steel produces flat-rolled and tubular steel products, electrical steels, advanced high-strength steels, coated products, automotive steels, construction products, tin products, and other steel materials. Its operations include traditional integrated steel mills, modern electric arc furnace facilities, iron-ore mining operations, finishing facilities, and specialized tubular operations. The company continues to invest in lower-emissions and next-generation steelmaking, including a $1.9 billion direct-reduced-iron project announced at its Big River Steel site in Arkansas in October 2026.

The most important current ownership change occurred on June 18, 2025, when Nippon Steel Corporation and U.S. Steel completed their previously announced transaction. U.S. Steel became a subsidiary within the Nippon Steel structure, while retaining the U.S. Steel name and Pittsburgh headquarters. As part of the national-security agreement associated with the transaction, the U.S. Government also received a non-economic “Golden Share” carrying certain governance and national-security rights. Therefore, older pages that still describe U.S. Steel as an independent NYSE-listed corporation are outdated.

U.S. Steel Headquarters & Corporate Office Address

Current Headquarters

600 Grant Street
Pittsburgh, PA 15219
United States

United States Steel Corporation continues to identify this address as its corporate headquarters. The building, widely known as the U.S. Steel Tower, now also serves as the headquarters for Nippon Steel North America.

Corporate Office

600 Grant Street
Pittsburgh, PA 15219
United States

The Pittsburgh headquarters houses central corporate and administrative functions for U.S. Steel and remains the company’s principal U.S. corporate location following the Nippon Steel transaction.

Mailing Address

United States Steel Corporation
600 Grant Street
Pittsburgh, PA 15219
United States

General corporate correspondence can be directed to this address when U.S. Steel has not provided a more specialized mailing destination.

Other Important Address

United States Steel International, Inc.
600 Grant Street
Pittsburgh, PA 15219
United States

U.S. Steel currently lists its international corporate operation at the same Pittsburgh location, with an additional office in Princeton, New Jersey.

Quick Information

Corporate Phone Number

412-433-1121

This is the main U.S. Steel Operator number and headquarters telephone contact.

Customer Service Number

412-433-1121

U.S. Steel does not publish one universal consumer-style customer-service number for all steel products. General callers can begin with the operator and request the relevant department.

Corporate Office Address

600 Grant Street, Pittsburgh, PA 15219, United States

This is the principal corporate office of United States Steel Corporation.

Headquarters Address

600 Grant Street, Pittsburgh, PA 15219, United States

U.S. Steel specifically committed to retaining its Pittsburgh headquarters as part of its 2025 partnership with Nippon Steel.

Email

sustainability@uss.com

This is a current verified corporate contact address associated with U.S. Steel’s sustainability reporting. Specialized customer, employee, media, and sales matters should use their appropriate channels.

Industry

Steel Manufacturing, Mining, Metals, Tubular Products, and Advanced Materials

U.S. Steel operates integrated mills, electric arc furnace facilities, mining assets, finishing operations, and tubular-product businesses.

Founded

1901

United States Steel Corporation was created through the combination of major American steel assets.

Number of Employees

22,053 employees as of December 31, 2024

This included 14,341 employees in North America and 7,712 employees at U.S. Steel Košice. Because Nippon Steel announced in 2026 that it plans to move U.S. Steel Košice to direct Nippon Steel ownership, this historical total should not automatically be treated as the future workforce composition.

Major Operating Locations

26 locations were reported in U.S. Steel’s 2024 sustainability data

The company’s footprint includes steelmaking, mining, finishing, tubular, and related facilities.

Corporate Office Hours

Monday to Friday, 8:00 AM to 5:00 PM Eastern Time

These are the published hours for the general U.S. Steel Operator.

Website

https://www.ussteel.com/

Careers Page

https://www.ussteel.com/careers

U.S. Steel Products & Services

Flat-Rolled Steel

U.S. Steel manufactures flat-rolled steel for automotive, appliance, construction, industrial, packaging, and other markets. Products include hot-rolled, cold-rolled, and coated sheet steel.

Advanced High-Strength Steel

The company develops advanced high-strength steels for applications that require a combination of strength, reduced weight, formability, and performance. Automotive manufacturers are an important market for these products.

Electrical Steel

Electrical steels are designed for applications involving electrical motors, generators, transformers, and other equipment where magnetic properties are critical. Demand is increasingly connected with electrification and energy infrastructure.

Automotive Steel

U.S. Steel supplies steel products used in vehicle bodies, structural components, safety systems, and other automotive applications. Its research and manufacturing operations work with automakers on materials that meet demanding performance requirements.

Tubular Products

The company manufactures steel tubular products for energy, industrial, and infrastructure markets. These products include casing, tubing, and other specialized pipe products.

Tin Mill Products

U.S. Steel supplies tin-coated and related products used in packaging applications, including food and industrial containers.

Construction Steel

Steel produced by U.S. Steel is used in buildings, infrastructure, appliances, machinery, and other construction-related applications.

Iron Ore

U.S. Steel operates iron-ore mining assets in Minnesota that supply raw materials to its steelmaking network. The company is also investing in infrastructure connecting its mining operations with next-generation steelmaking facilities.

Electric Arc Furnace Steel

Through Big River Steel and related investments, U.S. Steel has expanded its electric arc furnace manufacturing capability. EAF facilities allow greater use of recycled steel and support the company’s evolving lower-carbon production strategy.

Sustainable Steel Solutions

The company is developing lower-emissions steelmaking technologies and products intended to help customers reduce supply-chain emissions while preserving the performance characteristics required for industrial applications.

U.S. Steel Corporate Phone Numbers

Corporate Phone Number

412-433-1121

This is U.S. Steel’s primary corporate headquarters number. Callers can use it for general inquiries and request routing to the appropriate corporate or operating department.

Corporate Headquarters Number

412-433-1121

The same number serves the company’s headquarters at 600 Grant Street in Pittsburgh.

Corporate Office Number

412-433-1121

This number can be used when the caller needs assistance reaching an appropriate office but does not have a specialized department contact.

Pension & Benefits Number

877-877-4586

U.S. Steel publishes this toll-free number for pension and benefits inquiries. The service is available during weekday business hours.

Pension & Benefits TTY Number

833-353-2112

This TTY number is published for pension and benefits assistance for individuals who require that accessibility option.

Former Shareholder / Transfer Agent Number

866-433-4801

Former U.S. Steel shareholders with physical certificates, directly registered shares, or relevant dividend-reinvestment holdings are directed to EQ Shareowner Services at this number following the Nippon Steel transaction.

United States Steel International Number

412-433-3106

U.S. Steel publishes this number for United States Steel International, Inc., which is associated with the Pittsburgh headquarters and international business functions.

U.S. Steel Tubular Sales Number

877-893-9461

This number is published for U.S. Steel’s Tubular Sales and Product Development operations in Spring, Texas. It is appropriate for applicable tubular-product sales and technical inquiries.

UPI Contact Number

800-877-7672

U.S. Steel lists this number for its UPI facility in Pittsburg, California. Production there was indefinitely idled in December 2023, so the number should be treated as a location-specific contact rather than a general company hotline.

Houston Oilwell Services Number

281-458-9944

This number is associated with U.S. Steel Oilwell Services and Offshore Operations in Houston and is intended for relevant tubular and oilfield operational inquiries.

Media / Press Number

No single current general media telephone number is prominently published on the main contact page.

Journalists should use U.S. Steel’s current Newsroom and communications contacts rather than older investor or press numbers.

How to Reach a Real Person at U.S. Steel

For general corporate inquiries, start with the U.S. Steel Operator at 412-433-1121, available Monday through Friday from 8:00 AM to 5:00 PM Eastern Time. Clearly state whether the matter involves product sales, tubular products, a facility, pension benefits, employment, supplier relations, sustainability, corporate affairs, or another department so the operator can route the call correctly.

Before calling, prepare the name of the U.S. Steel facility or business unit involved, any purchase order or customer information, relevant product specifications, dates, employee or pension information where appropriate, and previous correspondence. U.S. Steel operates a large industrial network, so identifying the specific facility or product division can substantially improve routing.

Former shareholders should not call ordinary corporate customer service for certificate or registration matters following the Nippon Steel transaction. U.S. Steel directs qualifying former shareholders to EQ Shareowner Services at 866-433-4801. Pension and benefit inquiries should use 877-877-4586.

How to File a Complaint Against U.S. Steel

Complaints against U.S. Steel may involve product quality, commercial orders, suppliers, facility operations, environmental impacts, employment, benefits, safety, shareholder matters, contracts, or community concerns. Before escalating, collect purchase orders, invoices, contracts, photographs, facility information, product specifications, correspondence, incident dates, and any previous case or contact details.

Step 1: Contact Customer Service

For commercial matters, begin with the sales representative, account manager, plant contact, or other U.S. Steel employee responsible for the relationship. General callers who do not know the correct contact can begin with 412-433-1121.

Step 2: Contact the Relevant Department

Product sales, tubular operations, pension benefits, employment, suppliers, environmental issues, and shareholder matters are handled by different departments. Ask specifically for the function connected with the complaint.

Step 3: Request Supervisor or Management Review

If the initial contact cannot resolve the matter, request review by a manager, facility leader, account-management supervisor, or corporate department head. Provide the previous complaint history and state the desired resolution.

Step 4: Use the Company’s Written Complaint Channel

Submit a written complaint through the appropriate U.S. Steel corporate or departmental process. Include relevant facility names, product details, invoices, contracts, photographs, and previous correspondence.

Step 5: Contact Corporate Headquarters

Formal unresolved issues may be sent to United States Steel Corporation, 600 Grant Street, Pittsburgh, PA 15219. Clearly identify the intended department and explain what previous attempts at resolution have already been made.

Step 6: Use the Specialized Complaint or Dispute Department

Pension and benefit concerns should use the dedicated benefit channel, former shareholder matters should use EQ Shareowner Services, and safety, ethics, environmental, supplier, or commercial matters should be directed to the specialist team responsible for that subject.

Step 7: File With the Appropriate Regulator

Environmental complaints may involve the Environmental Protection Agency or state environmental agencies. Workplace safety matters may involve OSHA, labor matters may involve the National Labor Relations Board or other labor authorities, and certain product or trade matters may fall under additional federal agencies.

Step 8: Use Consumer Protection or Financial Dispute Options

Most U.S. Steel transactions are commercial rather than ordinary retail-consumer transactions, so contractual and industry dispute procedures are often more relevant than consumer agencies. Where an individual consumer or financial issue does apply, appropriate state or federal protection channels may still be available.

Step 9: Consider Formal Legal or Arbitration Procedures

Significant contractual, environmental, property, employment, injury, or commercial disputes may require mediation, arbitration, litigation, or another formal process. Review the governing agreement and preserve all supporting documentation before pursuing formal proceedings