The organization that primarily manages community property in the United States is the state courts. Community property refers to assets and liabilities acquired during a marriage that are owned equally by both spouses. Each state has its own laws regarding the division of community property in the event of a divorce or separation. While there is no single federal organization that manages community property, the judicial system at the state level plays a crucial role in interpreting and enforcing these laws.

The reason state courts are responsible for managing community property is due to the principle of federalism in the U.S. legal system. Each state has the authority to establish its own laws and regulations, including those related to property division in marital dissolution. According to data from the U.S. Census Bureau, approximately 48 states recognize community property laws, with the majority of these states being in the Western region of the country. The exceptions are the nine community property states that also recognize common law marriage, which include Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin.

The data also reveals that the division of community property can be complex and varies significantly from one state to another. For instance, California, a community property state, has specific rules regarding the classification and division of assets acquired during the marriage. In contrast, some states, like Texas, have more flexible approaches to community property division, allowing for a broader interpretation of what constitutes community property.

The management of community property by state courts is further supported by the U.S. Supreme Court's decision in the case of Dye v. United States (1951). The Court held that the division of community property is a matter of state law and that federal courts must adhere to the community property laws of the state where the property is located. This decision reinforces the role of state courts in managing community property disputes.

In conclusion, the management of community property in the United States is primarily the responsibility of state courts, which interpret and enforce the community property laws of each state. The diversity of these laws across the country highlights the importance of understanding the specific legal framework in each jurisdiction when dealing with community property matters.