Yes, we stand firmly behind the quality of our lists and offer a Data Quality Guarantee. We take great care to ensure our datasets are accurately described and advertised.

Because our files are delivered instantly after checkout, you receive immediate access to the complete database. For this reason, our primary guarantee is that we will work diligently to make any issue right. If you discover a discrepancy or problem with your file, please let our support team know. We will prioritize correcting the problem and providing you with an updated dataset. We will provide support to make sure that you are a satisfied customer.

We ask for good faith on both sides to make any issues are made right. If we cannot do that for some reason, we can discuss a refund.

Our delivery process is fully automated so you can get to work right away. Once you complete your secure online checkout, your list will be immediately delivered directly to your inbox.

You will receive an email containing the file as a standard .csv (Comma Separated Values) file. This format is universally compatible, allowing you to open it instantly in Microsoft Excel, Google Sheets, or upload it directly into your preferred CRM platform. (

Note: If you don't see the email within a few minutes, please check your spam or promotions folder!)

Once you purchase a list from CatholicData.co, it is yours to keep and use as often as you like for your organization's internal needs. Because this dataset is built from publicly available information that we have painstakingly compiled, verified, and standardized into an easy-to-use format, there are no recurring licensing fees or per-use charges.

Our data collection is the result of a robust, multi-tiered research process. We aggregate data from a wide variety of sources, including national Catholic directories, diocesan websites, and individual parish and school platforms. To ensure accuracy, we resolve any discrepancies by defaulting to the most localized, primary source available.

Collecting accurate data across thousands of localized institutions—especially rural entities or those undergoing mergers—presents unique challenges. To deliver a premium, highly accurate dataset, we run our lists through a strict quality assurance protocol. This includes extensive manual data-point verification, third-party auditing and standardization through verification tools, and ongoing continuous improvement fueled by feedback from our client network.

We will update our lists on a regular basis. Currently we are updating on a quarterly basis with plans to update monthly in the near future

While we recommend checking with your organization's database manager, we have found the following approach to be the most feasible and minimize the greatest number of potential errors:

Export all of the contacts in your database into an Excel .csv file. Be sure to include a field for the contact's unique identification number as well as the contact's ZIP code.

In the .csv file, insert a new column adjacent to the ZIP code column. In the newly created column, insert the following function: =VALUE(LEFT(text, num_chars)).

1. text = the respective cell from the ZIP Code column
2. num_chars = 5

Once you've successfully completed this step, feel free to flash fill the remaining cells in the column.

Next, insert a column adjacent to the column containing the contact's unique identification number. This column will contain the proper diocese based off of the ZIP code.

Pull up your recently purchased Excel file from Catholic Data.Co. In the newly created column, insert the following function: =XLOOKUP(lookup_value, lookup_array, return_array, [if_not_found], [match_mode], [search_mode]) 

lookup_value = the cell containing the respective ZIP code for the contact

lookup_array = the entire column containing ZIP codes in the Excel sheet from Catholic Data.co

return_array = the entire column containing dioceses in the Excel sheet from Catholic Data.co

[if_not_found] = "n/a"

[match_mode] = 0

[search_mode] = optional

1. Once again, feel free to flash fill the remaining cells in the column after completing the prior step. 
2. Select the both columns containing the contact's unique identification number and the respective diocese. Copy and Paste as Values. This ensures that all of the formulas are removed and you're left with only text.
3. Depending on the requirements of you database, you may only need the Diocese and Unique Record ID columns. Feel free to delete the other columns.
4. Finally, save the file as a .csv and upload to your database!

All of CatholicData.Co's files are .xls files. Once you've purchased your desired file, simply save as a .csv. Be sure to double check the data in the file as .csv files often alter the file's contents.

Once saved, as long as your database accepts data in the form of a .csv file, you're good to go!

If you have any questions before or after your purchase, please don't hesitate to reach out. Simply email us at support@catholicdata.co and we will be happy to assist you. Whether you need help with file compatibility or have a general inquiry, our support team typically replies within [1-2 business days].