County code

Text

Indicates the FIPS code for the county or political jurisdiction of a given address. The first two digits represent the state code and the last three represent the county code. Known or imputed for 119.3 million addresses — 99.6% of the addresses Faraday knows.

At a glance

Coverage today
99.6%
Typical coverage
99.5%
Addresses with a value
119.3M
Share in largest category
2.4%
Most values come
from the address
Latest collection
Oct 1, 2026

How the categories split

How values are spread across the records that have one. Use it to check that the attribute tells records apart: when one value holds nearly everyone, it will not separate audiences much. Categories are ranked by share, largest first. “All other values” groups the smallest into one bar.

Share by category

n = 119,309,652

Share of addresses in each category. 99+ categories, of which the 20 largest are shown, with 2.4% in the largest.

06037
2.4%
17031
1.5%
04013
1.3%
48201
1.2%
06073
0.8%
06059
0.8%
12086
0.8%
32003
0.7%
48113
0.7%
53033
0.7%
36047
0.6%
12011
0.6%
48439
0.6%
06065
0.6%
26163
0.6%
48029
0.6%
36061
0.6%
36081
0.5%
25017
0.5%
12099
0.5%
All other values
83.4%
Distinct categories
99+
Share in largest category
2.4%
Share in top 3 categories
5.1%

Every category

99+ categories

The chart above draws the 20 largest. Search here for one it does not. This list holds the 100 most common; rarer values are not named.

  • 060372.4%2,867,885 addresses
  • 170311.5%1,742,418 addresses
  • 040131.3%1,532,382 addresses
  • 482011.2%1,471,965 addresses
  • 060730.8%1,012,562 addresses
  • 060590.8%933,022 addresses
  • 120860.8%907,852 addresses
  • 320030.7%843,447 addresses
  • 481130.7%823,408 addresses
  • 530330.7%783,367 addresses
  • 360470.6%774,551 addresses
  • 120110.6%759,506 addresses
  • 484390.6%723,682 addresses
  • 060650.6%720,069 addresses
  • 261630.6%717,531 addresses
  • 480290.6%693,451 addresses
  • 360610.6%662,832 addresses
  • 360810.5%601,725 addresses
  • 250170.5%590,432 addresses
  • 120990.5%587,526 addresses
  • 421010.5%567,312 addresses
  • 120570.5%566,069 addresses
  • 060710.5%562,912 addresses
  • 060850.5%553,870 addresses
  • 390350.5%545,794 addresses
  • 390490.4%535,112 addresses
  • 120950.4%523,133 addresses
  • 261250.4%513,947 addresses
  • 420030.4%512,842 addresses
  • 060010.4%503,777 addresses
  • 060670.4%493,892 addresses
  • 361030.4%486,577 addresses
  • 270530.4%477,624 addresses
  • 371190.4%463,625 addresses
  • 484530.4%459,959 addresses
  • 371830.4%459,225 addresses
  • 121030.4%428,720 addresses
  • 360590.4%428,620 addresses
  • 120310.3%405,682 addresses
  • 131210.3%393,809 addresses

Category shares over time

2.4% (largest)

The 5 largest categories, each followed across 12 collections. Estimated from a 1% sample of addresses.

Oct 2025Dec 2025Feb 2026Apr 2026Jun 2026Sep 2026Oct 2026
0603717031040134820112086

Coverage

How widely Faraday has this attribute, and how precise its values are. How many of your own records get a value also depends on how many of them Faraday matches. The state map shows where coverage is thin. Coverage over time shows whether it is growing or shrinking.

Coverage by state

Percentage of addresses in each state with a value.

Coverage over time

99.6% today

Share of addresses holding a value at each monthly snapshot. A value carries forward for one year.

Jul 23Nov 24Mar 25Jul 25Dec 25Apr 26Oct 26

How we arrive at a value

Latest collection: 103,037,911 addresses

Whether a value was observed on the person themselves, carried from their address, or estimated from the people around them.

On the person — 0%
Not used for this attribute — no value is inherited this way.
From address — 100%
Carried from what we know about the household at their address.
From geography — 0%
Not used for this attribute — no value is inherited this way.

Coverage, in context

Where 99.6% sits on the catalog’s own coverage range.

catalog min 0%max 100%

Higher coverage than 92% of address-level attributes in the catalog

Freshness

Whether the values reflect today. A long gap since the latest collection means they may lag behind what is true now.

Collections

How recently this was collected, and how often a new collection arrives. Each bar is one collection, sized by how many addresses it carried. Gaps are real — collection is periodic, not continuous.

Oct 1, 2026
latest collection
23 days
since the latest collection
monthly
new collection cadence
Oct 25Dec 25Feb 26Apr 26Jun 26Sep 26

Change between collections

How much values move between collections. Income or life events should move; heavy change in something steady can mean noisy data.

0.0%

of addresses changed value between the two most recent collections — 1275.8× steadier than the catalog median of 16.0%.

Contribution ledger

20 ingestions

1 authority contributed since Jul 2023.

ObservedIngestedCountID
159,411,145eb9d843a-e90f-4c0f-a6a1-6407824973f5
158,647,96937a05688-5576-4b35-a37f-ed31a1298842
158,084,49662d317f2-489c-456e-b464-9cfab59f2deb
157,944,429f9d55800-7304-4043-b994-dabd7f12b3a8
157,975,076178f88a6-1494-4da4-a8fc-7b5ac45e50b8

Related attributes

Attributes whose descriptions are closest to this one.

Neighbors found Oct 2026.

Use it in the API

Send an email, phone, or address. Get County code back in real time.

  1. Add county_code to a project.
  2. Send an email, phone, or address to the project's append endpoint. The response carries County code for the matched person.
curl -X POST 'https://api.pro.faraday.ai/v1/projects/YOUR_PROJECT_ID/append' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
      "email": "jane.doe@example.com"
    }'
→ {"attributes":{"county_code":"06037"}}
Get it by APIAppend to a fileRead the API docs

Technical details

null in any row means the label does not apply, or is not recorded, for this attribute.

API name
The field to request through the API, and the key it comes back under in a payload.
county_code
Category
The catalog group the attribute is filed under.
fig/geography
Type · unit
The kind of value and, where it has one, its unit of measure. Counts on this page are in addresses, whatever the unit.
Text
Statistical type
How the values are meant to be read: a measured amount, one of a ranked set, one of an unordered set, or several from an unordered set. The chart's form comes from the published values; for categories without a rank prefix, this label decides whether they are listed in rank order or by size.
nominal
Allowed values
The full list of values, when the attribute has a fixed set.
null
Derivations
How the value is produced, each with its definition.
Derived
— the attribute is computed from other known or declared fields.
Observed
— the attribute is directly observed.
How values combine
How the values from the attribute's sources become the one value delivered.
Uses the first available of up to 2 source fields, in priority order.
Directionality
For ordered values, what a higher value means.
null
Deprecation
True when the attribute is being retired; choose another for new work.
false
API reference