SSA Field Office

Marshalltown, IASocial Security Office

The Marshalltown office serves 13 ZIP codes — file an SSDI application, submit medical records, or update your benefit details here.

Filing an SSDI claim in Marshalltown?

Free Claim Review

Address, phone & hours

Your local SSA service center

As your local Social Security service center, the Marshalltown office manages a monthly payout of 16 million dollars to beneficiaries in the region. The catchment area is retirement-heavy, with 76% of the 9,030 beneficiaries receiving retirement benefits and 11% receiving SSDI. While this office serves 13 ZIP codes, the majority of the caseload is concentrated in the 50158 area. Understanding this local mix is important when preparing your application, as the office is primarily focused on retirement and survivor services alongside disability intake.

You can visit this office to file an initial SSDI application, drop off medical records, verify your identity, or update your direct deposit information. Please note that this office does not make the final decision on your disability claim, which is handled by the state disability determination services. Additionally, any necessary hearings are conducted at a separate location. We recommend scheduling an appointment to minimize your wait time, though some services may be available on a walk-in basis.

Who this office serves

9,030
Total beneficiaries
980
Disabled workers
6,885
Retired workers
13
ZIPs served

Beneficiaries in this service area receive an estimated $15,705k in Social Security benefits each month.

Before you visit

To prepare for your appointment, bring a government-issued photo ID and a detailed work history covering the last 15 years. You should also provide a complete list of your treating physicians with their contact information, recent medical records, a list of current medications, and any prior denial letters if you have them. Expect your interview with a claims representative to last between 45 and 90 minutes. Being organized helps the representative process your information more efficiently.

Many applicants delay their claims by submitting incomplete work histories or failing to include recent medical records from all treating providers. Another common error is neglecting to mention mental health conditions, which are just as relevant as physical impairments. Always read every form thoroughly before signing, as errors in your initial paperwork can lead to unnecessary processing delays.

Filing an SSDI claim?

Free 2 minutes Confidential

Should you bring an attorney?

The application stage is the foundation of your entire disability case. Most people who apply without legal guidance find themselves facing a denial that could have been avoided with better evidence preparation. An attorney can help you review your file to ensure your claim is as strong as possible before it reaches the decision-makers.

Approval rates change with a lawyer

WITHOUT A LAWYER
baseline approval rate
Unrepresented claimants
WITH A LAWYER
~3×
higher approval rate
Represented claimants

Source: U.S. Government Accountability Office, GAO-18-37. The 3× gap is a population-wide average across all judges; individual outcomes vary.

If your SSDI claim moves to a hearing

About two-thirds of initial SSDI applications nationwide are denied. If yours is, your case moves to a hearing before an Administrative Law Judge at one of the regional hearing offices that handles appeals from Marshalltown. The Marshalltown field office holds your file at every appeal stage, but the substantive decisions happen further up the chain.

Frequently asked questions